Trousers Definition

trouzərz

trouser

noun

An outer garment, often, specif., for men and boys, extending from the waist generally to the ankles, and divided into separate coverings for the legs; pants.

Webster's New World

An article of clothing that covers the part of the body between the waist and the ankles, and is divided into a separate part for each leg.

Why can women wear trousers when men can't wear skirts?

Wiktionary

Synonyms:

Origin of Trousers

Attested since the 1610s, from the earlier form trouzes (attested since the 1580s), extended from trouse (1570s), with plural ending typical of things in pairs, from Middle Irish triubhas (“close-fitting shorts"), of uncertain origin. The unexplained intrusive second -r- is perhaps due to the influence of drawers.

From Wiktionary