1. a thin crisp wafer made of flour and water with or without leavening and shortening; unsweetened or semisweet

Definition categories: food, bread, breadstuff

2. a poor White person in the southern United States

Similar word(s): redneck

Definition categories: person, rustic

3. a programmer who cracks (gains unauthorized access to) computers, typically to do malicious things

- crackers are often mistakenly called hackers

Definition categories: person, coder, programmer

4. firework consisting of a small explosive charge and fuse in a heavy paper casing

Similar word(s): banger, firecracker

Definition categories: man–made, firework, pyrotechnic

5. a party favor consisting of a paper roll (usually containing candy or a small favor) that pops when pulled at both ends

Similar word(s): snapper

Definition categories: man–made, favor, favour

Sentences with cracker as a noun:

- She's an absolute cracker! The show was a cracker!