Source : Webster's Revised Unabridged Dictionary (1913)

Entertain \En`ter*tain"\, v. t. [imp. & p. p. {Entertained}; p.
   pr. & vb. n. {Entertaining}.] [F. entretenir; entre between
   (L. inter) + tenir to hold, L. tenere. See {Tenable}.]
   1. To be at the charges of; to take or keep in one's service;
      to maintain; to support; to harbor; to keep.

Entertain \En`ter*tain"\, v. i.
   To receive, or provide entertainment for, guests; as, he
   entertains generously.

Entertain \En`ter*tain"\, n. [Cf. F. entretien, fr. entretenir.]
   Entertainment. [Obs.] --Spenser.

Source : WordNet®

entertain
     v 1: provide entertainment for
     2: take into consideration, have in view; "He entertained the
        notion of moving to South America" [syn: {think of}, {toy
        with}, {flirt with}, {think about}]
     3: maintain (a theory, thoughts, or feelings); "bear a grudge";
        "entertain interesting notions"; "harbor a resentment"
        [syn: {harbor}, {harbour}, {hold}, {nurse}]