The plural form of "trouser" is "trousers."
Yes, "trouser" is a noun. It refers to a garment covering the body from the waist to the ankles, with a separate part for each leg.
Because you need one trouser for each leg - a pair of trousersTrousers is a plural noun referring to an outer garment covering the body from the waist to the ankles, with a separate part for each leg.The single form is used in certain circumstances:I've torn my trouser pocketShe wore a stunning trouser suitTrouser pressHe tore his left trouser leg
Practically any noun could be the objet of a preposition. But trouser is more often an adjective form of the noun "trousers."
pants, trouser, scissors, tweezers
Trouser snout is the feminine of "trouser snake" (aka camel toe)
Trouser snout is the feminine of "trouser snake" (aka camel toe)
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
"Groceries" is the plural form of "grocery."
The plural form of "meter" is "meters."
The plural form for the noun sergeant is sergeants; the plural possessive form is sergeants'.