(euphemistic, slang) fuck all.

(idiomatic) Watching alertly or attentively. / (idiomatic) Having prominent eyes. / (idiomatic, with for) Gazing at devotedly.

The four legs of a quadruped. / The four limbs of a primate. / A card game similar to whist. / A certain game of dominos.

Written in all caps, with all letters capitalized.

Alternative spelling of all caps

A small, herbaceous European plant with blue-violet flowers; Prunella vulgaris. / A remedy for all diseases.

Very probably; almost certainly.

(law) All without exception.

(informal) Extreme or intense in degree.

(informal) To an intense degree.