floe rat
Webster's Dictionary (GCIDE)
Floe \Floe\ (fl[=o]), n. [Cf. Dan. flag af iis, iisflage, Sw. flaga, flake, isflaga, isflake. See Flag a flat stone.] A low, flat mass of floating ice. [1913 Webster]
Floe rat (Zool.), a seal (Phoca f[oe]tida). [1913 Webster]