Main Entry: al·der

Pronunciation: \ˈȯl-dər\

Function: noun

Etymology: Middle English, from Old English alor; akin to Old High German elira alder, Latin alnus

Date: before 12th century

: any of a genus (Alnus) of toothed-leaved trees or shrubs of the birch family that have catkins which become woody, that typically grow in cool moist ground, and that have wood used especially in turnery; also : its wood