'Fierasfer' definitions:

Definition of 'Fierasfer'

From: GCIDE

Fierasfer \Fi`e*ras"fer\, n. [NL.] (Zool.) A genus of small, slender fishes, remarkable for their habit of living as commensals in other animals. One species inhabits the gill cavity of the pearl oyster near Panama; another lives within an East Indian holothurian. [1913 Webster]