Flat \Flat\, a.

1. (Golf) Having a head at a very obtuse angle to the shaft; -- said of a club.

2. (Gram.) Not having an inflectional ending or sign, as a noun used as an adjective, or an adjective as an adverb, without the addition of a formative suffix, or an infinitive without the sign to. Many flat adverbs, as in run fast, buy cheap, are from AS. adverbs in -["e], the loss of this ending having made them like the adjectives. Some having forms in ly, such as exceeding, wonderful, true, are now archaic.

3. (Hort.) Flattening at the ends; -- said of certain fruits.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Flat \Flat\, v. t. [imp. & p. p. Flatted; p. pr. & vb. n. Flatting.]

1. To make flat; to flatten; to level.

2. To render dull, insipid, or spiritless; to depress.

Passions are allayed, appetites are flatted. --Barrow.

3. To depress in tone, as a musical note; especially, to lower in pitch by half a tone.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Flat \Flat\, v. i.

1. To become flat, or flattened; to sink or fall to an even surface. --Sir W. Temple.

2. (Mus.) To fall form the pitch.

To flat out, to fail from a promising beginning; to make a bad ending; to disappoint expectations. [Colloq.]

Source: Webster's Revised Unabridged Dictionary (1913)
 

Flat \Flat\, a. [Compar. Flatter; superl. Flattest.]

[Akin to Icel. flatr, Sw. flat, Dan. flad, OHG. flaz, and AS. flet floor, G. fl["o]tz stratum, layer.]

1. Having an even and horizontal surface, or nearly so, without prominences or depressions; level without inclination; plane.

Though sun and moon Were in the flat sea sunk. --Milton.

2. Lying at full length, or spread out, upon the ground; level with the ground or earth; prostrate; as, to lie flat on the ground; hence, fallen; laid low; ruined; destroyed.

What ruins kingdoms, and lays cities flat! --Milton.

I feel . . . my hopes all flat. --Milton.

3. (Fine Arts) Wanting relief; destitute of variety; without points of prominence and striking interest.

A large part of the work is, to me, very flat. --Coleridge.

4. Tasteless; stale; vapid; insipid; dead; as, fruit or drink flat to the taste.

5. Unanimated; dull; uninteresting; without point or spirit; monotonous; as, a flat speech or composition.

How weary, stale, flat, and unprofitable Seem to me all the uses of this world. --Shak.

6. Lacking liveliness of commercial exchange and dealings; depressed; dull; as, the market is flat.

7. Clear; unmistakable; peremptory; absolute; positive; downright.

Flat burglary as ever was committed. --Shak.

A great tobacco taker too, -- that's flat. --Marston.

8. (Mus.)
   (a) Below the true pitch; hence, as applied to intervals, minor, or lower by a half step; as, a flat seventh; A flat.
   (b) Not sharp or shrill; not acute; as, a flat sound.

9. (Phonetics) Sonant; vocal; -- applied to any one of the sonant or vocal consonants, as distinguished from a nonsonant (or sharp) consonant.

Flat arch. (Arch.) See under Arch, n., 2. (b).

Flat cap, cap paper, not folded. See under Paper.

Flat chasing, in fine art metal working, a mode of ornamenting silverware, etc., producing figures by dots and lines made with a punching tool. --Knight.

Flat chisel, a sculptor's chisel for smoothing.

Flat file, a file wider than its thickness, and of rectangular section. See File.

Flat nail, a small, sharp-pointed, wrought nail, with a flat, thin head, larger than a tack. --Knight.

Flat paper, paper which has not been folded.

Flat rail, a railroad rail consisting of a simple flat bar spiked to a longitudinal sleeper.

Flat rods (Mining), horizontal or inclined connecting rods, for transmitting motion to pump rods at a distance. --Raymond.

Flat rope, a rope made by plaiting instead of twisting; gasket; sennit.

Note: Some flat hoisting ropes, as for mining shafts, are made by sewing together a number of ropes, making a wide, flat band. --Knight.

Flat space. (Geom.) See Euclidian space.

Flat stitch, the process of wood engraving. [Obs.]

-- Flat tint (Painting), a coat of water color of one uniform shade.

To fall flat (Fig.), to produce no effect; to fail in the intended effect; as, his speech fell flat.

Of all who fell by saber or by shot, Not one fell half so flat as Walter Scott. --Lord Erskine.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Flat \Flat\, adv.

1. In a flat manner; directly; flatly.

Sin is flat opposite to the Almighty. --Herbert.

2. (Stock Exchange) Without allowance for accrued interest. [Broker's Cant]

Source: Webster's Revised Unabridged Dictionary (1913)
 

Flat \Flat\, n.

1. A level surface, without elevation, relief, or prominences; an extended plain; specifically, in the United States, a level tract along the along the banks of a river; as, the Mohawk Flats.

Envy is as the sunbeams that beat hotter upon a bank, or steep rising ground, than upon a flat. --Bacon.

2. A level tract lying at little depth below the surface of water, or alternately covered and left bare by the tide; a shoal; a shallow; a strand.

Half my power, this night Passing these flats, are taken by the tide. --Shak.

3. Something broad and flat in form; as:
   (a) A flat-bottomed boat, without keel, and of small draught.
   (b) A straw hat, broad-brimmed and low-crowned.
   (c) (Railroad Mach.) A car without a roof, the body of which is a platform without sides; a platform car.
   (d) A platform on wheel, upon which emblematic designs, etc., are carried in processions.

4. The flat part, or side, of anything; as, the broad side of a blade, as distinguished from its edge.

5. (Arch.) A floor, loft, or story in a building; especially, a floor of a house, which forms a complete residence in itself.

Source: Webster's Revised Unabridged Dictionary (1913)