Meaning of part of speech

part' of speech'

Pronunciation: [key]
— Gram. Gram.
  1. any of the classes into which words in some languages, as Latin and English, have traditionally been divided on the basis of their meaning, form, or syntactic function, as, in English, noun, pronoun, verb, adverb, adjective, preposition, conjunction, and interjection.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.