saucer

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A small shallow dish having a slight circular depression in the center for holding a cup.
• noun An object similar in shape to a saucer.

from The Century Dictionary.

• noun A tobacco adapted by large absorptive capacity to take the ‘sauces’ in vogue in Continental Europe, which are said to consist chiefly of salt, sal-ammoniac, and sugar. See sauce, 6. A German and a Dutch saucer are known to the trade, consisting of varieties of the heavy export type chiefly from Virginia.
• noun A small dish or pan in which sauce is set on the table; a sauce-dish.
• noun A small, round, shallow vessel, a little deeper than a plate, upon which a cup, as a tea- or coffee-cup, is placed, and which is designed to retain any liquid which may be spilled from the cup.
• noun Something resembling a saucer.

from the GNU version of the Collaborative International Dictionary of English.

• noun obsolete A small pan or vessel in which sauce was set on a table.
• noun A small dish, commonly deeper than a plate, in which a cup is set at table.
• noun Something resembling a saucer in shape.
• noun A flat, shallow caisson for raising sunken ships.
• noun A shallow socket for the pivot of a capstan.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A small shallow dish to hold a cup and catch drips.
• noun An object round and gently curved (shaped like a saucer).
• noun obsolete A small pan or vessel in which sauce was set on a table.
• noun A flat, shallow caisson for raising sunken ships.
• noun A shallow socket for the pivot of a capstan.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun something with a round shape resembling a flat circular plate
• noun directional antenna consisting of a parabolic reflector for microwave or radio frequency radiation
• noun a disk used in throwing competitions
• noun a small shallow dish for holding a cup at the table