Bat-

• bat-

Originally of the nature of a noun adjunct forming compound nouns, first bat + man = the batman or the Bat-Man = Batman, then later bat-phone = Bat-phone, bat-signal = Bat-signal, and so on.

Bat-

1. Belonging to or associated with Batman; sometimes said of bat-themed objects used by him.
   • 2002 October 27, Richard B. Becker, “Re: The most implausible thing about BoP (no spoilers)”, in rec.arts.comics.dc.universe‎^[1] (Usenet), message-ID <3DBCA45A.F8B8C1AF@mindspring.com>:

     Holy unsafe sex, Batman! Did you forget to use your Bat-condom?

• ABT, ATB, B.T.A., BTA, TBA, Tab, abt, abt., tab