Tweezers is a plural noun or plurale tantum (Latin for "plural only"). Some names of instruments, like tweezers, only have a plural form.
"Tweezers" is a plural noun or plurale tantum (Latin for "plural only"). Some names of tools and instruments, like tweezers, consist of two parts joined together and only have a plural form.
Did you find your tweezers?
Did you find your tweezer?
These nouns are grammatically plural, and therefore cannot be used with the article "a" ("a" is for one). However, you can count these objects by using the phrases "a pair of tweezers", "two pairs of tweezers", "three pairs of tweezers", etc.
Use a pair of tweezers to remove splinters.
Use a tweezers to remove splinters.
They used two pairs of tweezers to pick up the pieces.
Remember, plural nouns take a plural form of a verb as well as a pronoun in the plural, so we say "those tweezers are".
Those tweezers are great for plucking unruly eyebrows.
This tweezers is great for plucking unruly eyebrows.
Follow the same rule with these plural nouns: