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

• IRL
• IRO
• iroko
• irokos
• iron
• Iron Age
• ironbark
• ironbarks
• iron-bound
• iron-cased
• iron-clad
• iron-clay
• Iron Cross
• Iron Crown
• iron curtain
• iron curtains
• ironed
• ironer
• ironers
• iron-fisted
• iron-founder
• iron-founders
• iron-foundries
• masticable
• masticate