The smile on Kallasvuo's face while handing over the baton to Elop was more like a rictus.
From the guardian.co.uk
That's not because I'm so pure, just that I don't like that rictus smile.
From the guardian.co.uk
He's taken to wearing a rictus grin as he staggers forward in pursuit of Murray's dropshots.
From the telegraph.co.uk
Teja stood very still in a corner of the living room, her face fixed in a rictus of surprise.
From the theatlantic.com
His face was set in a rictus of death that was somewhat like a smile.
From the economist.com
Bridget encourages me to sing with a relaxed smile in my voice, and a manic rictus on my face.
From the independent.co.uk
Not everyone wants to have so much plastic surgery they have a permanent rictus on their faces.
From the guardian.co.uk
Walter's default facial expression is a rictus of angst, while Cranston's is a mischievous smile.
From the nytimes.com
Her face a skull and hair blowing in the wind, she faced the road with a look of demonic rictus.
From the nytimes.com
More examples
A gaping grimace
A bird's gaping mouth; Any open-mouthed expression
The expanse of an open mouth, a bird's beak, or similar structure.
This is the corner of the mouth in mammals and of the beak in birds. Fleshy pads are located in the rictal area of caique chicks and touching them elicits a feeding response. I have noticed that these pads tend to be larger for parent reared-birds than for hand-reared birds.
The corner of the mouth; the juncture of the upper and lower lips.