CRACKERS

balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky

(adjective) informal or slang terms for mentally irregular; “it used to drive my husband balmy”

Source: WordNet® 3.1

Etymology

Noun

crackers

plural of cracker

(South Africa, only plural) A kind of noisy leather pants or trousers.

Adjective

crackers (comparative more crackers, superlative most crackers)

(UK, colloquial) Crazy, insane.

Synonyms

• See also insane

Anagrams

• recracks

Source: Wiktionary

CRACKER

Crack"er (krk"r), n.

1. One who, or that which, cracks.

2. A noisy boaster; a swaggering fellow. [Obs.] What cracker is this same that deafs our ears Shak.

3. A small firework, consisting of a little powder inclossed in a thick paper cylinder with a fuse, and exploding with a sharp noise; - - often called firecracker.

4. A thin, dry biscuit, often hard or crisp; as, a Boston cracker; a Graham cracker; a soda cracker; an oyster cracker.

5. A nickname to designate a poor white in some parts of the Southern United States. Bartlett.

6. (Zoöl.)

Definition: The pintail duck.

7. pl. (Mach.)

Definition: A pair of fluted rolls for grinding caoutchouc. Knight.

Source: Webster’s Unabridged Dictionary 1913 Edition