Knock \Knock\, v. i. [imp. & p. p. Knocked; p. pr. & vb. n. Knocking.]

[OE. knoken, AS. cnocian, cnucian; prob. of imitative origin; cf. Sw. knacka.Cf. Knack.]

1. To drive or be driven against something; to strike against something; to clash; as, one heavy body knocks against another. --Bacon.

2. To strike or beat with something hard or heavy; to rap; as, to knock with a club; to knock on the door.

For harbor at a thousand doors they knocked. --Dryden.

Seek, and ye shall find; knock, and it shall be opened unto you. --Matt. vii. 7.

To knock about, to go about, taking knocks or rough usage; to wander about; to saunter. [Colloq.]

``Knocking about town.'' --W. Irving.

To knock up, to fail of strength; to become wearied or worn out, as with labor; to give out. ``The horses were beginning to knock up under the fatigue of such severe service.'' --De Quincey.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Knock \Knock\, n.

1. A blow; a stroke with something hard or heavy; a jar.

2. A stroke, as on a door for admittance; a rap. `` A knock at the door.'' --Longfellow.

A loud cry or some great knock. --Holland.

Knock off, a device in a knitting machine to remove loops from the needles.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Knock \Knock\ (n[o^]k), v. t.

1. To strike with something hard or heavy; to move by striking; to drive (a thing) against something; as, to knock a ball with a bat; to knock the head against a post; to knock a lamp off the table.

When heroes knock their knotty heads together. --Rowe.

2. To strike for admittance; to rap upon, as a door.

Master, knock the door hard. --Shak.

To knock down.
   (a) To strike down; to fell; to prostrate by a blow or by blows; as, to knock down an assailant.
   (b) To assign to a bidder at an auction, by a blow or knock; to knock off.

To knock in the head, or on the head, to stun or kill by a blow upon the head; hence, to put am end to; to defeat, as a scheme or project; to frustrate; to quash. [Colloq.]

-- To knock off.
   (a) To force off by a blow or by beating.
   (b) To assign to a bidder at an auction, by a blow on the counter.
   (c) To leave off (work, etc.). [Colloq.]

-- To knock out, to force out by a blow or by blows; as, to knock out the brains.

To knock up.
   (a) To arouse by knocking.
   (b) To beat or tire out; to fatigue till unable to do more; as, the men were entirely knocked up. [Colloq.]

``The day being exceedingly hot, the want of food had knocked up my followers.'' --Petherick.
   (c) (Bookbinding) To make even at the edges, or to shape into book form, as printed sheets.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Knock \Knock\, v. i. To practice evil speaking or fault-finding; to criticize habitually or captiously. [Vulgar Slang, U. S.]

Source: Webster's Revised Unabridged Dictionary (1913)
 

Knock \Knock\, v. t. To impress strongly or forcibly; to astonish; to move to admiration or applause. [Slang, Eng.]

Source: Webster's Revised Unabridged Dictionary (1913)