3 occurrences in 3 dictionaries
Reference: Dilean
Fausets
A city of the shephelah or low country of Judah (Jos 15:38), meaning gourd or cucumber. Perhaps now Tina, S. of Ekron, in Philistia.
Morish
Dil'ean
Town in the lowlands of Judah. Jos 15:38.
Smith
Dil'ean
(gourd), one of the cities in the lowlands of Judah.
It has not been identified with certainty.