n.
Pronunciation: ' o ̇ l-d ə r
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