Tart v. t. : Sharp to the taste; acid; sour; as, a tart apple.

Tart v. t. : Fig.: Sharp; keen; severe; as, a tart reply; tart language; a tart rebuke.

Tart n. : A species of small open pie, or piece of pastry, containing jelly or conserve; a sort of fruit pie.

Example:
Is it better to bake raspberries in a Tart or just top the Tart with the fresh fruit?

Taxonomy
tart, fruit, free encyclopedia, onions, apples, Strawberry, puff pastry, search, Unsourced, dish, open top, upside-down, Savoury, varieties, German, cheese tart, Blueberry tart, pie.

Defination from the web:
tart is baked in an oven. The Tarte Tatin is a particular kind of "upside-down" tart, of apples, other fruit, or onions. ...