Sea purse

from WordNet (r) 3.0 (2006)

sea purse
    n 1: the seaward undercurrent created after waves have broken on
         the shore [syn: {undertow}, {sea puss}, {sea-puss}, {sea
         purse}, {sea-purse}, {sea-poose}]

from The Collaborative International Dictionary of English v.0.48

Sea purse \Sea" purse`\ (s[=e]" p[^u]rs`). (Zool.)
   The horny egg case of a skate, and of certain sharks.
   [1913 Webster]

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