Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
ποτιστηρίων channels LXX.Gen.30.38
ποτιστήριον channel LXX.Gen.24.20

Liddell-Scott-Jones

ποτιστήριον (potistērion) a channel G:N-N

ποτιστήριον-ιστήριον, τό,

drinking-trough for cattle, [LXX]

__2 = popina, [Refs]

LSJ Scripture Refs: LXX.Gen.24.20