A fish or animal with a hard mouth or jaw; also used to describe a stubborn or uncommunicative person.
Compound of 'hard' (Old English 'heard') and 'mouth' (Old English 'muð'). Used as a descriptive compound in fishing and zoology to identify fish with hard, bony mouths.
Fishing communities developed incredibly specific vocabulary for fish characteristics—'hardmouth' fish include species like drum fish that have hard pharyngeal teeth (throat teeth) for crushing shells, showing how specialized vocabularies solve practical problems.
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