1) a tub or trough shaped receptacle, vat, in which grapes are trodden
2) the lower vat, dug in the ground, into which the must or new wine flowed from the press
Part of Speech: noun feminine
Citing in TDNT: 4:254, 531
Apparently a primary word; a trough, that is, wine vat: - winepress.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root ληνός; click on the second column to search for that grammatical form of the root ληνός; click on the third column to search for that word and grammatical form; click on the total to search for the root ληνός.