'Interjection' definitions:

Definition of 'interjection'

From: WordNet
noun
An abrupt emphatic exclamation expressing emotion [syn: ejaculation, interjection]
noun
The action of interjecting or interposing an action or remark that interrupts [syn: interjection, interposition, interpolation, interpellation]

Definition of 'Interjection'

From: GCIDE
  • Interjection \In`ter*jec"tion\, n. [L. interjectio: cf. F. interjection. See Interject.] [1913 Webster]
  • 1. The act of interjecting or throwing between; also, that which is interjected. [1913 Webster]
  • The interjection of laughing. --Bacon. [1913 Webster]
  • 2. (Gram.) A word or form of speech thrown in to express emotion or feeling, as O! Alas! Ha ha! Begone! etc. Compare Exclamation. [1913 Webster]
  • An interjection implies a meaning which it would require a whole grammatical sentence to expound, and it may be regarded as the rudiment of such a sentence. But it is a confusion of thought to rank it among the parts of speech. --Earle. [1913 Webster]
  • How now! interjections? Why, then, some be of laughing, as, ah, ha, he! --Shak. [1913 Webster]

Synonyms of 'interjection'

From: Moby Thesaurus