Trimmer \Trim"mer\, n. (Coal Storage) An apparatus used for piling the coal in gradually increasing piles made by building up at the point of the cone or top of the prism.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Trim \Trim\, a. [Compar. Trimmer; superl. Trimmest.]

[See Trim, v. t.]

Fitly adjusted; being in good order., or made ready for service or use; firm; compact; snug; neat; fair; as, the ship is trim, or trim built; everything about the man is trim; a person is trim when his body is well shaped and firm; his dress is trim when it fits closely to his body, and appears tight and snug; a man or a soldier is trim when he stands erect.

With comely carriage of her countenance trim. --Spenser.

So deemed I till I viewed their trim array Of boats last night. --Trench.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Trimmer \Trim"mer\, n.

1. One who trims, arranges, fits, or ornaments.

2. One who does not adopt extreme opinions in politics, or the like; one who fluctuates between parties, so as to appear to favor each; a timeserver.

Thus Halifax was a trimmer on principle. --Macaulay.

3. An instrument with which trimming is done.

4. (Arch.) A beam, into which are framed the ends of headers in floor framing, as when a hole is to be left for stairs, or to avoid bringing joists near chimneys, and the like. See Illust. of Header.

Source: Webster's Revised Unabridged Dictionary (1913)