n.
1 a short close-fitting jacket.
2 a woman's thin usu. woollen under-bodice worn for extra warmth in winter.
Etymology: prob. f. the 2nd Earl Spencer, Engl. politician d. 1834
2.
n. Naut. a trysail.
Etymology: perh. f. K. Spencer (early 19th c.)
Useful english dictionary. 2012.