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The Collaborative International Dictionary
Sea purse

Sea purse \Sea" purse`\ (s[=e]" p[^u]rs`). (Zo["o]l.) The horny egg case of a skate, and of certain sharks.

Wiktionary
sea purse

n. (alternative form of sea-purse English)

WordNet
sea purse

n. the seaward undercurrent created after waves have broken on the shore [syn: undertow, sea puss, sea-puss, sea-purse, sea-poose]