From The Collaborative International Dictionary of English v.0.48 :
Drumfish \Drum"fish`\, n. (Zool.)
Any fish of the family Sci[ae]nid[ae], which makes a loud
noise by means of its air bladder; -- called also drum.
[1913 Webster]
Note: The common drumfish ({Pogonias chromis) is a large
species, common south of New Jersey. The southern red
drum or red horse ({Sci[ae]na ocellata), and the
fresh-water drum or croaker ({Aplodionotus grunniens),
are related species.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
drumfish
n 1: small to medium-sized bottom-dwelling food and game fishes
of shallow coastal and fresh waters that make a drumming
noise [syn: drum, drumfish]