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1. Informal or slang term meaning insane, strange, eccentric or stupid
   "it used to drive my husband crackers";
   - balmy [archaic], barmy, bats, batty, bonkers, buggy [N. Amer], cracked, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, wacky, whacky, daffy, dippy, nutsy [N. Amer], potty [Brit], daft as a brush [Brit], round the twist [Brit], wacko, cuckoo

1. A thin crisp wafer made of flour and water with or without leavening and shortening; unsweetened or semisweet
    
2. [US] A poor White person in the southern United States
   - redneck [N. Amer]
    
3. A programmer who cracks (gains unauthorized access to) computers, typically to do malicious things
   "crackers are often mistakenly called hackers"
    
4. Firework consisting of a small explosive charge and fuse in a heavy paper casing
   - firecracker, banger [Brit]
    
5. A party favour consisting of a paper roll (usually containing candy or a small favour) that pops when pulled at both ends
   - snapper, cracker bonbon
    
6. [Brit] An outstanding example of its kind
   - beauty, beaut, killer, blinder [Brit], lulu, knockout

See also: insane

Type of: bread, breadstuff, coder, computer programmer, developer, example, exemplar, favor [US], favour [Brit, Cdn], firework, good example, model, party favor [US], party favour [Brit, Cdn], programer [US], programmer, pyrotechnic, rustic, software developer, software engineer, staff of life

Encyclopedia: Crackers