An adult male of domesticated cattle or oxen. / Specifically, one that is uncastrated. / A male of domesticated cattle or oxen of any age. / Any adult male bovine.

(intransitive, often with into or through) To force oneself (in a particular direction). / (agriculture, intransitive, of a cow or heifer) To be in heat; to be ready for mating with a bull.

(obsolete) A bubble.

To mock; to cheat. / (intransitive) To lie, to tell untruths. / (UK, military) To polish boots to a high shine.

A papal bull, an official document or edict from the Pope. / A seal affixed to a document, especially a document from the Pope.

A lie. / (euphemistic, informal) Nonsense.

Large and strong, like a bull. / (of large mammals) Adult male. / (finance) Of a market in which prices are rising (compare bear). / Stupid.

(dated, 17th century) to publish in a Papal bull

A surname transferred from the nickname derived from the name of the animal.

The mating of a cow with a bull.