Usually means: Stinger-like structure in insects.
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We found 18 dictionaries that define the word aculeus:

General (16 matching dictionaries)
  1. aculeus: Merriam-Webster
  2. aculeus: Collins English Dictionary
  3. aculeus: Vocabulary.com
  4. aculeus: Wordnik
  5. aculeus: Wiktionary
  6. aculeus: Webster's New World College Dictionary, 4th Ed.
  7. aculeus: Infoplease Dictionary
  8. Aculeus, aculeus: Dictionary.com
  9. Aculeus: Online Plain Text English Dictionary
  10. aculeus: Webster's Revised Unabridged, 1913 Edition
  11. aculeus: Rhymezone
  12. Aculeus: AllWords.com Multi-Lingual Dictionary
  13. aculeus: FreeDictionary.org
  14. aculeus: Mnemonic Dictionary
  15. aculeus: TheFreeDictionary.com
  16. aculeus: Merriam-Webster

Computing (1 matching dictionary)
  1. aculeus: Encyclopedia

Medicine (1 matching dictionary)
  1. online medical dictionary (No longer online)

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Definitions from Wiktionary (aculeus)

▸ noun:  (botany) A sharp spike or other projection growing on a plant, as in some brambles and roses.
▸ noun:  A sting.

Similar:
acicle, acumen, acicula, aciculum, acrophore, apiculum, thorn, spicule, spica, bract, more...

Opposite:
blunt, dull, rounded

Types:
stinger, thorn, spine, barb, quill, prickle, thistle, more...

▸ Words similar to aculeus

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▸ Rhymes of aculeus

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Similar:
acicle, acumen, acicula, aciculum, acrophore, apiculum, thorn, spicule, spica, bract, more...

Opposite:
blunt, dull, rounded

Types:
stinger, thorn, spine, barb, quill, prickle, thistle, more...



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