Search Result for "underside": 
Wordnet 3.0

NOUN (1)

1. the lower side of anything;
[syn: bottom, underside, undersurface]



The Collaborative International Dictionary of English v.0.48:

Underside \Un"der*side`\, n.
   The lower or lowest side of anything. --Paley.
   [1913 Webster]


WordNet (r) 3.0 (2006):

underside
    n 1: the lower side of anything [syn: bottom, underside,
         undersurface]