alder has definitions from the field of botany
1
[ noun ] wood of any of various alder trees; resistant to underwater rot; used for bridges etc

Related terms

wood

2
[ noun ] Last name, frequency rank in the U.S. is 10131
3
[ noun ] (botany) north temperate shrubs or trees having toothed leaves and conelike fruit; bark is used in tanning and dyeing and the rot-resistant wood

Synonyms

alder_tree

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