three-spined stickleback

noun
\ˈthrē-ˈspīn(d)- \

Definition of three-spined stickleback 

: a stickleback (Gasterosteus aculeatus) chiefly of fresh and brackish waters that typically has three dorsal spines

called also three-spine stickleback

Illustration of three-spined stickleback

Illustration of three-spined stickleback

First Known Use of three-spined stickleback

1769, in the meaning defined above

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The first known use of three-spined stickleback was in 1769

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