The Collaborative International Dictionary of English v.0.48:

Fabaceae \Fabaceae\ prop. n.
   A large natural family of trees, shrubs, vines, and herbs
   bearing bean pods; divided for convenience into the
   subfamilies Caesalpiniacea; Mimosaceae; Papilionaceae.

   Syn: Leguminosae, family Leguminosae, family Fabaceae,
        legume family, pea family.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Fabaceae
    n 1: a large family of trees, shrubs, vines, and herbs bearing
         bean pods; divided for convenience into the subfamilies
         Caesalpiniaceae; Mimosaceae; Papilionaceae [syn:
         Leguminosae, family Leguminosae, Fabaceae, family
         Fabaceae, legume family, pea family]