To clench one's teeth together tightly because of pain, anger, frustration, or self-assurance. / (idiomatic) To face up to a difficult or disagreeable situation and deal with it.

(idiomatic) To dance.

To pull or push one's fingers so that the joints make a cracking noise.

To pull or push one's fingers so that they make a cracking noise.

(idiomatic) To be resistant to intoxication or to show few signs of intoxication, even after consuming a significant amount of alcohol.

(UK, Australia, slang) Crazy, insane.

(dated, nautical) To record the variations of the tide and the positions of the sun and moon using a nautical almanac and sextant to determine the location and phase of the moon and to calculate the relative effect of the tides on the navigation of the ship.

Alternative form of lose one's cool

(idiomatic) To become upset or disconcerted; to lose one's temper.

(idiomatic) To remain composed, calm, and even-tempered, especially in a provocative situation.