radio reflector,
radio telescope astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extraterrestrial sources
saucer -
something with a round shape resembling a flat circular plate; "the moon's disk hung in a cloudless sky"
round shape a shape that is curved and without sharp angles
intervertebral disc,
intervertebral disk a fibrocartilaginous disc serving as a cushion between all of the vertebrae of the spinal column (except between the first two)
A saucer is a small type of dishware, a plate that is specifically used with and for supporting a cup – a cylindrical cup intended for coffee or a half-sphere teacup for tea. Additionally, the saucer is a distant cousin to the plate. The saucer has a raised center with a depression sized to fit a mating cup.
