n. & adj.
n. 1 a continuous period of being seated, esp. engaged in an activity (finished the book in one sitting). 2 a time during which an assembly is engaged in business. 3 a session in which a meal is served (dinner will be served in two sittings). 4 Brit. Law = TERM 5c. 5 a clutch of eggs.
adj. 1 having sat down. 2 (of an animal or bird) not running or flying. 3 (of a hen) engaged in hatching. sitting duck (or target) colloq. a vulnerable person or thing. sitting pretty see PRETTY. sitting-room 1 a room in a house for relaxed sitting in. 2 space enough to accommodate seated persons. sitting tenant a tenant already in occupation of premises.