Home › Words › S › spoutfishspoutfishspoutfish means any of a number of marine animals that spout water; especially certain bivalve mollusks that squirt out water when retiring into their holes, for example, the thick shelled river mussel (Unio crassus).Among words judged in Lexicurio's Arena, spoutfish ranks #16,749 of 42,762 for Qualifying.EtymologyFrom spout + fish.nounAny of a number of marine animals that spout water; especially certain bivalve mollusks that squirt out water when retiring into their holes, for example, the thick shelled river mussel (Unio crassus).Definitions & examples from Wiktionary (CC BY-SA 3.0).