- a convict or prisoner.
- an army recruit.
- a soldier confined to camp and assigned to cleaning the grounds or other menial tasks as punishment for violation of the rules.
- US military an inexperienced, untrained, or clumsy soldier, esp one employed on menial duties
n.“convict,” 1956, from yard (n.1) + bird (n.1), from the notion of prison yards; earlier it meant “basic trainee” (World War II armed forces slang).