Definition of alder in English:

alder

Syllabification: al·der
Pronunciation: /ˈôldər
 
/
(also alder tree)

noun

A widely distributed tree of the birch family that has toothed leaves and bears male catkins and woody female cones.
  • Genus Alnus, family Betulaceae: many species, including the European (or black) alder (A. glutinosa), common in damp ground and on riverbanks
More example sentences
  • The train passes mature hardwood maple, beech, yellow birch, hickory and American linden trees, and softwood alders and willows weeping over a calm pond.
  • Trees which are especially suited for erosion control include varieties of birch, cedar, alder, fir, pine and redwood.
  • In Prussia the coal of the alder, limetree, poplar, elder, willow, hemp, and hazel is used for powder.

Origin

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

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Pronunciation: ˈflɪp(ə)nt
adjective
not showing a serious or respectful attitude