(Christianity) To act as a bishop, to perform the duties of a bishop, especially to confirm another's membership in the church. / (by extension, jocularly, obsolete) To confirm (in its other senses).

(UK, colloquial, obsolete) To murder by drowning.

A chemical element (symbol Bi) with an atomic number of 83: a brittle silvery-white metal. / (countable) A single atom of this element.

(of humans or other animals) Sexually attracted to both men and women (by a narrow definition) or to people of multiple or any genders (by a broad definition; compare pansexual).

A person who is bisexual. / (botany, rare) A plant or fungus, or part thereof, which is bisexual. / (chiefly biology) An organism (that is, a species) which has male and female sexes.

A small restaurant. / A small bar or pub.

(rare) to eat at a bistro

A diocese or region of a church which a bishop governs. / The office or function of a bishop.

(transitive, geometry) To divide an angle, line segment, or other figure into two equal parts.

(geometry) A bisector, which divides into two equal parts.