\Tho*rac"ic\, a. [Cf. F. thoracique.] (Anat.)
Of or pertaining to the thorax, or chest.
{Thoracic duct} (Anat.), the great trunk of the lymphatic
   vessels, situated on the ventral side of the vertebral
   column in the thorax and abdomen. See Illust. of
   {Lacteal}.

\Tho*rac"ic\, n. [Cf. F. thoracique.] (Zo["o]l.)
One of a group of fishes having the ventral fins placed
beneath the thorax or beneath the pectorial fins.