aculeonis

Latin

Etymology

From aculeus +‎ -ō(nis), with /ū/ taken from acūtus (“sharp”). Documented in the Reichenau Glossary.

The nominative singular would have ended in -ō in Classical Latin. The ending -ōnis reflects a Gallo-Romance remodelling according to other inflections, for instance the accusative singular -ōnem. Compare the nominative singular pedis, standing for Classical Latin pēs in the aforementioned glossary.

Noun

acūleōnis m (genitive acūleōnis); third declension (Early Medieval Latin)

1. spike, stinger

Declension

Third-declension noun (i-stem).

Case	Singular	Plural
Nominative	acūleōnis	acūleōnēs
Genitive	acūleōnis	acūleōnium
Dative	acūleōnī	acūleōnibus
Accusative	acūleōnem	acūleōnēs acūleōnīs
Ablative	acūleōne	acūleōnibus
Vocative	acūleōnis	acūleōnēs

Descendants

• Aragonese: agujón
• Franco-Provençal: agouelyon
• French: aiguillon (influenced by aiguille)
• Occitan: agulhon
• Piedmontese: ujon, avion

References

• Walther von Wartburg (1928–2002) “*acūleo”, in Französisches Etymologisches Wörterbuch, volumes 24: Refonte A–Aorte, page 124