A pair or couple, especially one that is harmonious or elegant.
A musical composition in two parts, each performed by a single voice (singer, instrument or univoce ensemble).
A song composed for and/or performed by a duo.
To perform (sing, play, etc.) as a duet.
(of two people) To say at the same time, to chorus.
To perform a duet.
To communicate (warnings, mating calls, etc.) through song.
The act of uniting or joining two or more things into one.
An affiliation of several parishes for joint support and management of their poor; also the jointly-owned workhouse.
That which is united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.
A data structure that can store any of various types of item, but only one at a time.
A trade union; a workers' union.
An association of students at a university for social and/or political purposes; also in some cases a debating body.
A joint or other connection uniting parts of machinery, such as pipes.
The act or state of marriage.
The set containing all of the elements of two or more sets.
The state of being united or joined; a state of unity or harmony.
Belonging to, represented by, or otherwise pertaining to a labour union.
To combine sets using the union operation.