She was wearing dark blue trousers and a white sweater.
Oxford Essential Dictionary
trousers
(British) (American pants) noun (plural)
a piece of clothing for your legs and the lower part of your body:
Your trousers are on the chair.
grammar
Be careful! You cannot say 'a trousers'. You can say a pair of trousers: I bought a new pair of trousers or: I bought some new trousers.
Longman Dictionary of Contemporary English
trousers
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 ↑wear1(7), ⇨ catch somebody with their trousers down at ↑catch1(6)
Oxford Advanced Learner's Dictionary
trousers
trou·sers [ˈtraʊzəz] [ˈtraʊzərz] (especially BrE) (NAmE usually pants) noun
plural
a piece of clothing that covers the body from the waist down and is divided into two parts to cover each leg separately
• a pair of grey trousers
• I was still in short trousers (= still only a boy) at the time.
• He dropped his trousers.
see catch sb with their trousers down at catch v., wear the trousers at wear v.
Derived Word: trouser
See also: pants
Word Origin:
[trouser trousers] early 17th cent.: from archaic trouse (singular) from Irish triús and Scottish Gaelic triubhas (see trews), on the pattern of drawers.
Example Bank:
• He disapproves of women in trousers.
• He dropped his trousers in a rude gesture.
• He quickly pulled on his trousers and a T-shirt.
• I was still in short trousers at the time.
• I was still in short trousers= still only a boy at the time.
Cambridge Advanced Learner's Dictionary
Cambridge Advanced Learner's Dictionary - 4th Edition
trousers / ˈtraʊ.zəz / / -zɚz / noun [ plural ] ( US Usually pants )
A1 a piece of clothing that covers the lower part of the body from the waist to the feet, consisting of two cylinder-shaped parts, one for each leg, that are joined at the top:
I need a new pair of trousers to go with this jacket.
Why aren't you wearing any trousers, David?
© Cambridge University Press 2013
Collins Advanced Learner’s English Dictionary
trousers
/traʊzə(r)z/
Note: The form 'trouser' is used as a modifier.
1.
Trousers are a piece of clothing that you wear over your body from the waist downwards, and that cover each leg separately. (mainly BRIT; in AM, usually use pants)
He was smartly dressed in a shirt, dark trousers and boots...
Alexander rolled up his trouser legs.
N-PLURAL: also a pair of N
2.
to wear the trousers: see wear
Merriam-Webster's Advanced Learner's Dictionary
trousers
trou·sers /ˈtraʊzɚz/ noun [plural] : pants 1
all mouth and no trousers
- see 1mouth
wear the trousers
- see 1wear
with your trousers down Brit informal : in an embarrassing situation
• another CEO caught with his trousers down [=(US) with his pants down]
- trou·ser /ˈtraʊzɚ/ adj always used before a noun
• a trouser leg