- a sustained gaping, as of a bird's beak or an animal's mouth
- the opening so produced
- a fixed, gaping grin
Origin of rictusModern Latin ; from L, open mouth ; from past participle of ringi, to gape
nounpl. rictus or ric·tus·es
- A gaping grimace: “his mouth gaping in a kind of rictus of startled alarm” (Richard Adams).
- a. The expanse of an open mouth or a bird's beak.b. The corner of the mouth or the fleshy area where the upper and lower mandibles of a bird meet.
Origin of rictusLatin, from past participle of ring&imacron;, to gape.
From Latin rictus, participle of ringor (“open the mouth wide")