[1] : The Collaborative International Dictionary of English v.0.48

rejoin \rejoin"\ r?-join", v. t. imp.  p. p. rejoined
   -joind"; p. pr.  vb. n. rejoining. f. rejoindre; pref.
   re- re- + joindre to join. see join, and cf. rejoinder.
   1. to join again; to unite after separation.
      1913 webster

   2. to come, or go, again into the presence of; to join the
      company of again.
      1913 webster

            meet and rejoin me, in the pensive grot. --pope.
      1913 webster

   3. to state in reply; -- followed by an object clause.
      1913 webster
see also:
rejoined rejoining join rejoinder 

[2] : The Collaborative International Dictionary of English v.0.48

rejoin \rejoin"\, v. i.
   1. to answer to a reply.
      1913 webster

   2. law to answer, as the defendant to the plaintiff's
      replication.
      1913 webster

[3] : WordNet (r) 2.0

rejoin
     v 1: join again
     2: answer back syn: retort, come back, repay, return,
        riposte
see also:
retort come back repay return riposte 

[4] : Moby Thesaurus II by Grady Ward, 1.0

32 moby thesaurus words for "rejoin":
   acknowledge, answer, answer back, come back, come back at, come in,
   confute, countercharge, counterclaim, echo, flash back,
   give acknowledgment, give answer, make a rebuttal, react, rebut,
   reecho, refute, reply, respond, retort, return, return answer,
   return for answer, reverberate, riposte, say, say in reply,
   shoot back, surrebut, surrejoin, talk back

Rejoin >> R Words
Rejoin, definition of term: Rejoin
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