rictus /rikˈtəs/ (zoology)

1. The gape, esp of a bird
2. The chink or aperture of a lipped corolla
3. Unnatural gaping of the mouth, eg in horror

• murages
• mural
• mural circle
• mural circles
• mural crown
• mural crowns
• muralist
• muralists
• mural painting
• murals
• murder
• murdered
• murderee
• murderees
• murderer
• murderers
• murderess
• murderesses
• murdering
• murdering-piece
• murderous
• murderously
• murderousness
• murders
• murder will out