basin
ba.sin \'ba-s-*n\ \-*nd\ n [ME, fr. OF bacin, fr. LL bacchinon] 1a: an open
usu. circular vessel with sloping or curving sides used typical ly for
holding water for washing 1b: the quantity contained in a basin 2a: a dock
built in a tidal river or harbor 2b: a water area enclosed or partly
enclosed 3a: a large or small depression in the surface of the land or in
the ocean floor 3b: the entire tract of country drained by a river and its
tributaries 3c: a great depression in the surface of the lithosphere
occupied by an oce an 4: a broad area of the earth beneath which the strata
dip usu. from the sid es toward the center - ba.sined aj