411 REFERENCE · Wiktionary
Efail Isaf
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From en cy efail + isaf lower forge.
Proper noun
1
en village wcomm/Llantwit Fardre cobor/Rhondda Cynon Taf cc/Wales OS grid ref ST0884.