A tree, usually growing in moist land, and belonging to the genus Alnus. The wood is used by turners, etc.; the bark by dyers and tanners. In the U. S. the species of alder are usually shrubs or small trees.
I pointed to where our village lay, on the flat in-shore among the alder-trees and pollards, a mile or more from the church.
Charles Dickens. Great Expectations (1861)
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I broke and ran. My breath rasped in my chest as I tore through the screen of oak and alder, ignoring brambles, nettles, stones, fallen logs, everything in my path.
Diana Gabaldon. Outlander (1991)
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Behind Krak there came into view in the shade of the alder tree the shapely figure of Stepan Arkadyevitch.