e caudata

noun4

1. •
   A form of the letter e modified by the addition of a diacritical “tail”: ⟨ę⟩.
2. •
   Used in Latin for a long ē that represents an etymological ⟨ae⟩ or ⟨oe⟩ diphthong, both of which diphthongs had phonologically merged into ⟨ē⟩ by the early Mediaeval period.
3. •
   Used in Middle and Early Modern Irish for ⟨e⟩, ⟨ae⟩, and ⟨ea⟩.
4. •
   Used in Old Norse for /æ(ː)/, representing the Proto-Germanic *a (as opposed to the Proto-Germanic *e).