yardbird

Noun yardbird has 2 senses

• yardbird(n = noun.person) yard bird - a military recruit who is assigned menial tasks;
is a kind of military recruit, recruit

• yardbird(n = noun.person) con, convict, inmate, yard bird - a person serving a sentence in a jail or prison;
has particulars: lifer, trusty
is a kind of captive, prisoner