A yellowish volatile synthetic liquid C₅H₁₁NO₂ of commercial amyl alcohol and nitrous acid that is used medicinally as a vasodilator. It is rapidly absorbed by the body on inhalation, and is sometimes used recreationally especially as an aphrodisiac.
Refinery equipment used to pyrolyse organic feedstocks. If catalyst is used to aid pyrolysis it is informally called a cat-cracker
A police officer.
A dry, thin, crispy baked bread (usually salty or savoury, but sometimes sweet, as in the case of graham crackers and animal crackers).
An ambitious or hard-working person (i.e. someone who arises at the 'crack' of dawn).
A Christmas cracker.
A firecracker.
A person or thing that cracks, or that cracks a thing (e.g. whip cracker; nutcracker).
One who cracks (i.e. overcomes) computer software or security restrictions.
A short piece of twisted string tied to the end of a whip that creates the distinctive sound when the whip is thrown or cracked.
A northern pintail, species of dabbling duck.
A fine, great thing or person (crackerjack).
An impoverished white person from the southeastern United States, originally associated with Georgia and parts of Florida; (by extension) any white person.
The final section of certain whips, which is made of a short, thin piece of unravelled rope and produces a cracking sound.