trousers
Trousers are a piece of clothing that covers your body from the waist downwards, and covers each leg separately. Trousers is a plural noun. You use a plural form of a verb with it.
His trousers were covered in mud.
Don't talk about ‘a trousers’. You say some trousers or a pair of trousers.
It's time I bought myself some new trousers.
Umar was dressed in a pair of black trousers.
You usually use a singular form of a verb with a pair of trousers.
There was a pair of trousers in his carrier-bag.
The form trouser is often used in front of another noun.
The waiter took a handkerchief from his trouser pocket.
Hamo was rolling up his trouser leg.
In American English, more common words for this item of clothing are pants or slacks.