tart

Concise Oxford English Dictionary © 2008 Oxford University Press:
tart1

▶noun an open pastry case containing a sweet or savoury filling.

– derivatives
tartlet noun.

– origin ME: from OFr. tarte or med. L. tarta, of unknown origin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
tart2 informal

▶noun derogatory a prostitute or promiscuous woman. ▶verb (tart oneself up) chiefly Brit. dress or make oneself up in order to look attractive.

■ (tart something up) improve the appearance of something, especially in a superficial way.

– derivatives
tartily adverb,
tartiness noun,
tarty adjective .

– origin C19: prob. an abbrev. of sweetheart.

Concise Oxford English Dictionary © 2008 Oxford University Press:
tart3

▶adjective

• 1 sharp or acid in taste.

• 2 (of a remark or tone of voice) cutting, bitter, or sarcastic.

– derivatives
tartly adverb,
tartness noun.

– origin OE teart ‘harsh, severe’, of unknown origin.