Meanings
proper noun
- A river in southern London, England, now mainly underground.
Origin
Probably from Proto-Germanic *ēþrō via Old English ǣðre (“runlet of water, fountain, spring, stream”).
Full word history & related roots →Cite this entry
APA
Effra. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/Effra
MLA
“Effra.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Effra. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “Effra,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/Effra.
Source: Effra on Wiktionary, CC BY-SA 4.0.