Lexical Definition

‎ὑπολήνιον‎ hypolḗnion (hoop-ol-ay'-nee-on) trough ^G:N-N
neuter of a presumed compound of ‎ὑπό‎ and ‎ληνός‎

winefat.

• vessel or receptacle under the press, i.e. lower wine-vat

Abbott-Smith

† ὑπολήνιον, -ου, τό (< ὑπό, ληνός), [in LXX: Jl 3 (4):13*, Ha 2:17(16), Za 14:10, Is 16:10 (יֶקֶב) * ;]
a vessel or trough beneath a winepress to receive the juice (RV, a pit for the winepress) Mk 12:1 (v. Swete, in l, and cf. ληνός).†

Abbott-Smith References

Liddell-Scott-Jones

ὑπολήνιον, τό,

vessel placed under a press to receive the wine or oil, vat, [LXX+NT+2nd c.AD+] adjective, κρατῆρας -ίους uncertain meaning in [Refs 1st c.BC+]

_{LSJ Scripture Refs: LXX.Joel.3.13 ☩ LXX.Isa.16.10 ☩ Mark.12.1}