Synonym for lamprey ... <zoology> An eel-like marsipobranch of the genus Petromyzon, and allied genera. The lampreys have a round, sucking mouth, without jaws, but set with numerous minute teeth, and one to three larger teeth on the palate. There are seven small branchial openings on each side. ... The common or sea lamprey of America and Eur... Found on http://www.encyclo.co.uk/local/20973