Definition of: reptile

(rep′til, -tīl) noun
1. A cold-blooded, air-breathing vertebrate, especially one with scales, as a lizard, snake, or crocodile; a reptilian; any member of the class Reptilia.
2. A groveling, abject person; one morally base or odious.
—adjective
1. Crawling on the belly; creeping; reptant.
2. Groveling morally; sly and base; treacherous; venomous.
3. Of, pertaining to, or resembling a reptile. [<LL, neut. sing. of reptilis crawling <reptus, pp. of repere creep]