Long johns

long johns
Meaning: 
warm unisex (ie for men and women) underwear with long legs
 
EG
We ordered some long johns from Uniqlo.
 
You need to wear long johns in winter.
Part of Speech: 
Noun
Grammar: 
Notice that although the form of the word is plural, the meaning is singular, the same as trousers. So, if you want to count long johns you would say "a pair of long johns", "two pairs of long johns" etc.
Word Family: 
Not applicable
Examples: 

Not applicable