Boyd’s Bible Dictionary:
(hole). Artificial reservoir for water. Very necessary in the East and sometimes built very elaborately and expensively (Eccl. 2:6; Isa. 42:15).
Concise Bible Dictionary:
See the various names by which they are called.
Strong’s Dictionary of Greek Words:
Transliteration:
kolumbethra
Phonic:
kol-oom-bay’-thrah
Meaning:
a diving-place, i.e. pond for bathing (or swimming)