ˈsid.ə(r), -itə- noun
( -s )
Etymology: Middle English, from sitten to sit + -er — more at sit
1. : one that sits: as
a. obsolete : rider
b. : a broody hen
c. : one who sits for a portrait or a bust
d. : one who has a seance with a psychic
e.
[by shortening]
: baby-sitter
f. : b-girl
2.
a. : an easy target
sitter for enemy submarines
b. : an easy scoring or fielding chance : setup
3. Britain : sitting room