Source : Webster's Revised Unabridged Dictionary (1913)

Lochia \Lo*chi"a\, n. pl. [NL., from Gr. ?, pl., fr. ? belonging
   to childbirth, ? a lying in, childbirth.] (Med.)
   The discharge from the womb and vagina which follows
   childbirth.

Source : WordNet®

lochia
     n : substance discharged from the vagina (cellular debris and
         mucus and blood) that gradually decreases in amount
         during the weeks following childbirth