adret
The sun-facing side of a mountain; in the northern hemisphere, this is typically the south-facing slope.
The distribution of barley is generally on the adret slope, the ubac seeming to be disregarded. A sunny slope is the most important natural factor in the cultivation of barley and wheat. Very rarely they are cultivated in ubac fields, but close investigation showed them to be of secondary adret nature. In this case seeds are sown a month earlier and mown ten days later than on the adret slope.
Where it comes from
Borrowed from French adret or Occitan adret, adré, adrech, adreit (“sun-facing side of a mountain”), from Old Occitan adreg, adreit, from a (“to, towards”) (from Latin ad (“to, towards”), ultimately from Proto-Indo-European *h₂éd (“at; to”)) + dreg, dreit (“just; right”) (from Latin dīrēctus (“direct, straight”), ultimately from Proto-Indo-European *h₃reǵ- (“to straighten, right oneself; just, right”)); compare French adroit.
Adapted from the Wiktionary entry adret (CC BY-SA 4.0).