- (euphemistic, usually childish) Feces; the act of defecation.
- I need to go number two.
- (nautical, slang) a first mate
- primary assistant; vice-leader
- After she had shown great promise over the last 10 years, he made her his number two.
- (cricket) The batsman who opens alongside the number one, but does not face the first delivery.
- (defecation): number one