We found 35 dictionaries that define the word alder:

General (24 matching dictionaries)

1. Alder, alder: Merriam-Webster
2. Alder, alder: Oxford Learner's Dictionaries
3. alder: American Heritage Dictionary of the English Language
4. alder: Collins English Dictionary
5. alder: Vocabulary.com
6. Alder, alder: Wordnik
7. Alder, alder: Wiktionary
8. alder: Webster's New World College Dictionary, 4th Ed.
9. alder: The Wordsmyth English Dictionary-Thesaurus
10. alder: Infoplease Dictionary
11. Alder, alder: Dictionary.com
12. alder: Online Etymology Dictionary
13. Alder: Wikipedia, the Free Encyclopedia
14. Alder: Online Plain Text English Dictionary
15. alder: Webster's Revised Unabridged, 1913 Edition
16. alder: Rhymezone
17. Alder: AllWords.com Multi-Lingual Dictionary
18. alder: Webster's 1828 Dictionary
19. alder: FreeDictionary.org
20. alder: Mnemonic Dictionary
21. Alder: TheFreeDictionary.com
22. alder: Merriam-Webster

Computing (1 matching dictionary)

23. alder: Encyclopedia

Medicine (4 matching dictionaries)

24. Alder: Merriam-Webster Medical Dictionary
25. online medical dictionary (No longer online)
26. Allergy Glossary (No longer online)
27. Alder: Medical dictionary

Miscellaneous (2 matching dictionaries)

28. baby names list (No longer online)
29. ALDER: Acronym Finder

Science (1 matching dictionary)

30. Alder: Botanical Name listing of Plants

Slang (1 matching dictionary)

31. alder: Urban Dictionary

Tech (2 matching dictionaries)

32. Book Binding (No longer online)
33. Sweetwater Music (No longer online)

(Note: See alders as well.)

Definitions from Wiktionary ( ) ▸ noun:  Any of several trees or shrubs of the genus Alnus, belonging to the birch family. ▸ noun:  An alderman or alderwoman. ▸ noun:  A topographic surname from Middle English for someone who lived by alder trees. Similar: alder tree, Eller, red alder, green alder, black alder, alderwood, hazel alder, common alder, grey alder, witch alder, more... Opposite: birch, maple, oak, pine, spruce Phrases: red alder, black alder, alder trees, alder tree, speckled alder, more... Adjectives: red, black, common, white, speckled, diels, green, european, retro, grey, leaved Colors:     rust,     olive,     sage,     fern,     chestnut, more... ▸ Word origin ▸ Words similar to alder ▸ Usage examples for alder ▸ Idioms related to alder ▸ Wikipedia articles (New!) ▸ Popular adjectives describing alder ▸ Words that often appear near alder ▸ Rhymes of alder ▸ Invented words related to alder