n. [ It. matto mad (cf. L. mattus, matus, drunk) + -oid. ] A person of congenitally abnormal mind bordering on insanity or degeneracy. [ Webster 1913 Suppl. ]
‖n. [ F. matoir. ] (Engraving) A kind of coarse punch with a rasplike face, used for making a rough surface on etching ground, or on the naked copper, the effect after biting being very similar to stippled lines. [ Webster 1913 Suppl. ]