lamantine

from The Collaborative International Dictionary of English v.0.48

Lamantin \La*man"tin\, n. [F. lamantin, lamentin, prob. from the
   name of the animal in the Antilles. Cf. {Manater}.] (Zool.)
   The manatee. [Written also {lamentin}, and {lamantine}.]
   [1913 Webster]