D defs.my
Entry 2 senses Webster, 1913

Preposition

/prĕp-ə-zĭsh'ən/ · Prep·o·si·tion · IPA /ˌpɹɛpəˈzɪʃən/
01 n. A word employed to connect a noun or a pronoun, in an adjectival or adverbial sense, with some other word; a particle used with a noun or p…
  1. 1.
    A word employed to connect a noun or a pronoun, in an adjectival or adverbial sense, with some other word; a particle used with a noun or pronoun (in English always in the objective case) to make a phrase limiting some other word; -- so called because usually placed before the word with which it is phrased; as, a bridge of iron; he comes from town; it is good for food; he escaped by running.(Gram.)
  2. 2.
    A proposition; an exposition; a discourse.[Obs.]
    “He made a long preposition and oration.” — Fabyan.