Gram.
either member of a matched pair of words, of which the second is a coordinating conjunction, as either ... or, neither ... nor, both ... and, or not only ... but.
Gram.
either member of a matched pair of words, of which the second is a coordinating conjunction, as either ... or, neither ... nor, both ... and, or not only ... but.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012