A pair of two similar or equal things; couple.

A man’s close-fitting jacket, with or without sleeves, worn by European men from the 1400s to the 1600s.

plural of doublet

Wearing a doublet.

Wearing a doublet.

A magnifying glass consisting of two planoconvex lenses, designed to correct spherical aberration and chromatic dispersion.

plural of Wollaston's doublet

(music) To mix together two or more audio tracks while doing studio recording.

The holding of two contradictory beliefs in one's mind simultaneously and accepting both of them as true or correct, without realizing the contradiction.

a device that connects two horses to a wagon or other implement. The tugs of a harness are connected to a singletree, two of which are connected to a doubletree, which, in turn, is connected to the implement.