Sea ad·der Zool. (a) The European fifteen-spined stickleback (Gasterosteus spinachia); -- called also bismore. (b) The European tanglefish, or pipefish (Syngnathus acus).
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Bis·mer n.
1. A rule steelyard. [Scot.]
2. Zool. The fifteen-spined (Gasterosteus spinachia).
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