Bottom 5 [count] : a piece of clothing that is worn on the lower part of the body
a bikini bottom
— often plural
So, "a bikini bottom" should look like "a pair of panties" but they use it as a singular noun.
And pajama bottoms should look like "a pair of pants" and they use it as a plural noun.
Which of the followings are correct?
-She is wearing a bikini bottom
-She is wearing a pair of bikini bottoms
-She is wearing a pajama bottom
-She is wearing a pair of pajama bottoms
Note: Also, Do we say "put on your bottoms" or "put on your bottom" when we mean he can put any thing on to cover his lower body?
For example, I want my child to wear either a pair of pants or a pair of shorts or a pair of panties. As long as he wears one of the there, it is fine.
It is tired to think about whether I have to say "pants, shorts or panties". And they are very similar sometimes and confusing. In that case, is it correct to say "put on your bottoms" or "put on your bottom"