Bot. [ad. L. axilla: see below; cf. mod.F. axille.] The upper angle between a leaf or petiole and the stem from which it springs; also that between a branch and the trunk.

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1794.  Martyn, Rousseau’s Bot., v. 50. Branches which grow from their alæ or axils.

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1872.  H. Macmillan, True Vine, v. 210. The buds of plants almost always grow in the axil.

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