A large or capacious mouth; used literally to describe someone or something with a notably big mouth.
Compound of 'full' and 'mouth,' used descriptively in older English texts, though not as common in modern usage compared to words like 'big-mouthed.'
Compound descriptors like 'full-mouth' show how English speakers in earlier centuries were very literal and concrete in their observations—describing what they actually saw rather than using abstract terms.
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