(1):

(n.) A small dish, commonly deeper than a plate, in which a cup is set at table.

(2):

(n.) A flat, shallow caisson for raising sunken ships.

(3):

(n.) A shallow socket for the pivot of a capstan.

(4):

(n.) Something resembling a saucer in shape.

(5):

(n.) A small pan or vessel in which sauce was set on a table.