Mimosa \Mi*mo"sa\ (?; 277), n. [NL., fr. Gr. ? imitator. Cf.
{Mime}.] (Bot.)
A genus of leguminous plants, containing many species, and
including the sensitive plants ({Mimosa sensitiva}, and {M.
pudica}).
Note: The term mimosa is also applied in commerce to several
kinds bark imported from Australia, and used in
tanning; -- called also {wattle bark}. --Tomlinson.