1. Acronym.  best available technology; a principle applying to regulations on limiting pollutant discharges.
  2. Noun.  Any of the small, nocturnal, flying mammals of the order Chiroptera, which navigate by means of echolocation. They look like a mouse with membranous wings extending from the forelimbs to the hind limbs or tail. Altogether, there are about 1,000 bat species in the world.
  3. Noun.  (context, offensive) An old woman.
  4. Noun.  (1811) A low whore: so called from moving out like a bat in the dusk of the evening.
  5. Noun.  A club made of wood or aluminium used for striking the ball in sports such as baseball, softball and cricket.
  6. Noun.  A turn at hitting the ball with a bat in a game.
  7. Noun.  (two-up, lang en) : The piece of wood on which the spinner places the coins and then uses for throwing them. (Reference: Sidney J. Baker, ''The Australian Language'', second edition, 1966, chapter XI section 3, page 242.).
  8. Verb.  (transitive) to hit with a bat.
  9. Verb.  (intransitive) to take a turn at hitting a ball with a bat in sports like cricket, baseball and softball, as opposed to fielding.
  10. Verb.  (intransitive) to strike or swipe as though with a bat.
  11. Verb.  (transitive) to flutter: ''bat one's eyelashes''.
  12. Noun.  (obsolete) packsaddle.

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This entry was last updated on RefTopia from its source on 3/20/2012.