The Collaborative International Dictionary of English v.0.48:

Boraginaceous \Bo*rag`i*na"ceous\, a. (Bot.)
   Of, pertaining to, or resembling, a family of plants
   (Boraginace[ae]) which includes the borage, heliotrope,
   beggar's lice, and many pestiferous plants.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Boraginaceae
    n 1: a widely distributed family of plants distinguished by
         circinate flowers and nutlike fruit [syn: Boraginaceae,
         family Boraginaceae, borage family]