Home › Words › S › seabankseabankseabank means A bank or mole to defend against the sea.Among words judged in Lexicurio's Arena, seabank ranks #2,613 of 42,762 for Qualifying.EtymologyFrom Middle English see-banke, se-banke, see banke, equivalent to sea + bank.nounA bank or mole to defend against the sea.The seashore.Definitions & examples from Wiktionary (CC BY-SA 3.0).