Dictionary.net

A white outer garment worn by the clergy.

White robe worn by clergymen.

A white linen garment worn over their other dress by the elergy of the Episcopal Church during service, and by all who ministerially take part in it.

An outer, long, white, linen robe, with wide sleeves, worn by an officiating clergyman in certain parts of the service in the Episcopal or R. Cath. Ch., and in others.

n. [French, Latin] A white garment worn over another dress by the clergy of the episcopalian and certain other churches in some of their ministrations.