Occurs only in John 5:2 (marg., also RSV, "sheep-gate"). The word so rendered is an adjective, and it is uncertain whether the noun to be supplied should be "gate" or, following the Vulgate Version, "pool."
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Sheep-market'". "Easton's Bible Dictionary".