Is eyeglasses a plural possessive noun?
The word 'eyeglasses' is a singular and plural noun; it is one
of the nouns that are a singular word for 'a pair of', such as
scissors, pants, etc. The singular, 'eyeglass' is the word for the
lens in the eyeglasses. For example, 'I'm wearing my eyeglasses.'
or 'I have two pair of eyeglasses.'
The plural possessive is eyeglasses'. Example sentence:
The eyeglasses' lenses need cleaning.