Pajama vs. Pajamas

Pajama and Pajamas Definitions
Pajama
A garment, usually consisting of loose-fitting pants and a shirt or top, worn for sleeping or lounging.
Pajamas
A garment, usually consisting of loose-fitting pants and a shirt or top, worn for sleeping or lounging.
Pajama
A pair of loose-fitting pants worn in South and Southeast Asia by men and women.
Pajamas
A pair of loose-fitting pants worn in South and Southeast Asia by men and women.
Pajama
(US) pajamas
We were greeted by an old, pajama-clad man.
Let's have a pajama party.
Pajama top and bottoms
Pajamas
Clothes for wearing to bed and sleeping in, usually consisting of a loose-fitting shirt and pants/trousers.
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Pajama
(rare) A pair of pajamas.
Pajamas
Loose-fitting trousers worn by both sexes in various southern Asian countries including India.
Pajamas
Originally, in India, loose drawers or trousers, such as those worn, tied about the waist, by Mohammedan men and women; by extension, a similar garment adopted among Europeans, Americans, etc., for wear in the dressing room and during sleep; also, a suit consisting of drawers and a loose upper garment for such wear.
Pajamas
Loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers
Pajamas
Lightweight trousers worn in various Eastern countries