saucer

(noun) something with a round shape resembling a flat circular plate. Synonyms: disk, disc. Example: "The moon's disk hung in a cloudless sky."

(noun) a small shallow dish for holding a cup at the table.

(noun) directional antenna consisting of a parabolic reflector for microwave or radio frequency radiation. Synonyms: dish, dish aerial, dish antenna.

(noun) a disk used in throwing competitions. Synonyms: discus.