411 REFERENCE · Wiktionary
Speyer line
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Pronunciation
en aɪn 3
Proper noun
1
en linguistics In German dialectology, an isogloss separating the Central German dialects to the north (which have a stop in words like de Appel apple) from the Upper German dialects to the south (which have an affricate).