noun, plural (especially collectively) star·fish, (especially referring to two or more kinds or species) star·fish·es.
Examples from the Web for starfish
To prevent casualties, and also to provide more room, two Companies were pushed forward on the 28th to Starfish trench.
A peculiar little creature, known as Tornaria, was once considered to be the larva of a starfish.A Guide to the Study of Fishes, Volume 1 (of 2)|David Starr Jordan
The other arms then turn in a similar manner and the starfish is soon “right side up.”
Soon another little pushing in of the body takes place, and, lo, out of this grows the body of the starfish that is to be!Chatterbox, 1906|Various
That is, if a starfish loses an arm (ray) through accident, a new ray will grow out to replace the old.Elementary Zoology, Second Edition|Vernon L. Kellogg