Any of several white wines from the Rhine River valley in Germany (`hock' is British usage) WordNet 3.0 & Open English WordNet

Hock is a British term for German white wine. Wikipedia

A type of wine Wikipedia Disambiguation

The regional variety of German spoken in the Rhineland in Germany, which is approximately the former Prussian Rhine Province, or the West half of todays federal state North Rhine-Westphalia plus the North half of todays federal state Rhinland-Palatinate. It is both related to modern Standard German, and the various rather diverse hereditary local languages, and at the same time clearly distinct from either. OmegaWiki

Wine that is grown and produced in the Rhine valley. OmegaWiki

A wine from the area around the Rhine. Wiktionary

A Rhenish wine, of a light yellow color, either sparkling or still, from the Hochheim region; often applied to all Rhenish wines. Wiktionary