trou ‧ sers S2 /ˈtraʊzəz $ -ərz/ BrE AmE noun [plural] especially British English
[ Date: 1600-1700 ; Origin: trouse 'trousers' (14-19 centuries) , from Scottish Gaelic triubhas ]
a piece of clothing that covers the lower half of your body, with a separate part fitting over each leg SYN pants American English :
His trousers were slightly too short.
I need a new pair of trousers for work.
—trouser adjective [only before noun] :
The tickets are in my trouser pocket.
⇨ wear the trousers at ↑ wear 1 (7), ⇨ catch somebody with their trousers down at ↑ catch 1 (6)