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(anatomy) The soft skin on each side of the face, below the eyes; the outer surface of the sides of the oral cavity.
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(anatomy, informal, usually in the plural) The lower part of the buttocks that is often exposed beneath very brief underwear, swimwear, or extremely short shorts.
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(figurative, informal, uncountable) Impudence.
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(biology, informal) One of the genae, flat areas on the sides of a trilobite's cephalon.
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One of the pieces of a machine, or of timber or stonework, that form corresponding sides or a similar pair.
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(in the plural) The branches of a bridle bit.
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Either side of an axehead.
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(metalworking) The middle section of a flask, made so that it can be moved laterally, to permit the removal of the pattern from the mould.