mopboard

from WordNet (r) 3.0 (2006)

mopboard
    n 1: a molding covering the joint formed by a wall and the floor
         [syn: {baseboard}, {mopboard}, {skirting board}]

from The Collaborative International Dictionary of English v.0.48

Mopboard \Mop"board`\, n. (Carp.)
   A narrow board nailed against the wall of a room next to the
   floor; skirting board; baseboard. See {Baseboard}.
   [1913 Webster]