Source : Webster's Revised Unabridged Dictionary (1913)

Bromine \Bro"mine\, n. [Gr. ? bad smell, stink. Cf. {Brome}.]
   (Chem.)
   One of the elements, related in its chemical qualities to
   chlorine and iodine. Atomic weight 79.8. Symbol Br. It is a
   deep reddish brown liquid of a very disagreeable odor,
   emitting a brownish vapor at the ordinary temperature. In
   combination it is found in minute quantities in sea water,
   and in many saline springs. It occurs also in the mineral
   bromyrite.

Source : WordNet®

bromine
     n : a nonmetallic largely pentavalent heavy volatile corrosive
         dark brown liquid element belonging to the halogens;
         found in sea water [syn: {Br}, {atomic number 35}]