the world > life > the body > external parts of body > head > face > mouth > [verb (intransitive)] > lips (5)
intransitive. Esp. of a mouth or lips: to swell out, to protrude.
transitive. To purse (the lips); to push (the mouth) out; to pout. Frequently with out.
intransitive. To swell, protrude. Obsolete.
transitive. To relax (the lips, etc.) from being pursed or puckered. Also intransitive.
intransitive. To make a moue.