alder

 
Pronunciation: /ˈɔːldə/
(also alder tree)

noun

  • a widely distributed tree of the birch family which has toothed leaves and bears male catkins and woody female cones.
    • Genus Alnus, family Betulaceae: many species

Origin:

Old English alor, aler, of Germanic origin; related to German Erle; forms spelled with d are recorded from the 14th century