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Trefoillate 14c., type of clover, from Anglo-French trifoil (13c.), Old French trefueil "clover, clover-leaf," from Latin trifolium "three-leaved plant," from tri- "three" (see [..]
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TrefoilThree-leaved. (Wood, Margaret. The English Medieval House, 415)
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Trefoil(n) any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves(n) a plant of the genus Trifolium(n) an architectural ornament in the form of three arcs ar [..]
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TrefoilA three lobed shape.
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TrefoilTrefoil is a refractory structure in the preheating zone of some rotary kilns, dividing the kiln into three channels, to improve heat transfer between the hot gases and the limestone.
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TrefoilThree-lobed opening or arch.
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TrefoilA figure composed of three leaf-like parts.
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