\Scar"a*boid\, a. [Scarab + -oid.] (Zo["o]l.)
Of or pertaining to the family {Scarab[ae]id[ae]}, an
extensive group which includes the Egyptian scarab, the
tumbledung, and many similar lamellicorn beetles.

\Scar"a*boid\, n. (Zo["o]l.)
A scaraboid beetle.