dale (n.) Look up dale at Dictionary.com
Old English dæl "dale, valley, gorge," from Proto-Germanic *dalan "valley" (cf. Old Saxon, Dutch, Gothic dal, Old Norse dalr, Old High German tal, German Tal "valley"), from PIE *dhel- "a hollow" (cf. Old Church Slavonic dolu "pit," Russian dol "valley"). Preserved from extinction by Norse influence in north of England.