[ad. L. arbuscula, dim. of arbor, arbos tree; also, a tuft of feathers.]

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  a.  A dwarf tree; a shrub of tree-like growth. b. A tuft of feathery cilia.

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1657.  in Phys. Dict.

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1831.  Macgillivray, trans. Richard’s Bot., 49. Arbuscles, when they are branched at their base and carry buds, e. g. the Hasel and Lilac.

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1860.  Encycl. Brit., XXI. 996/1. Medusidæ … their rims ornamented with fringes, furbelows, and arbuscles of such delicacy.

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