Definitions for half-moon
Random House Webster's College Dictionary
the moon when, at either quadrature, half its disk is illuminated.
the phase of the moon at this time.
something having the shape of a half-moon or crescent.
Origin of half-moon:
half-moon, lunula, lunule(noun)
the crescent-shaped area at the base of the human fingernail
the time at which the Moon is at first or last quarter when half its face is illuminated
the moon, in its first or last quarter, when only half the face is illuminated
anything shaped like a crescent, especially the base of a fingernail
the moon at the quarters, when half its disk appears illuminated
the shape of a half-moon; a crescent
an outwork composed of two faces, forming a salient angle whose gorge resembles a half-moon; -- now called a ravelin
a marine, sparoid, food fish of California (Caesiosoma Californiense). The body is ovate, blackish above, blue or gray below. Called also medialuna