noun one destitute of strength; ·esp., one of feeble mind.
2. imbecile ·vt to weaken; to make imbecile; as, to imbecile men's courage.
3. imbecile ·adj destitute of strength, whether of body or mind; feeble; impotent; ·esp., mentally wea; feeble-minded; as, hospitals for the imbecile and insane.