A person, in a church, cinema etc., who escorts people to their seats. / A male escort at a wedding. / A doorkeeper in a courtroom.

Synonym of Arctic wolf (“Canis lupus arctos”)

(mathematics) an operation that transforms a physical system undergoing a sequence of events into one in which the events take place in the reverse sequence / (physics) T-symmetry

Hand-to-hand fighting; fisticuffs.