1 any pinniped mammal of the families Otariidae (see eared seal) and Phocidae (see earless seal) that are aquatic but come on shore to breed
Related adjs →
2 any earless seal (family Phocidae), esp. the common or harbour seal or the grey seal (Halichoerus grypus)
4 intr to hunt for seals
(Old English seolh; related to Old Norse selr, Old High German selah, Old Irish selige tortoise)
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