Gib"bous (?), a. [Cf. F. gibbeux. See Gibbose.]
Swelling by a regular curve or surface; protuberant; convex; as, the moon is gibbous between the half-moon and the full moon.
The bones will rise, and make a gibbous member.
Sir T. Browne.
-- Gib"bous*ly, adv. -- Gib"bous*ness, n.
© Webster 1913.