- a side of a mountain receiving direct sunlight.
Origin of adret
1930–35; < French < Provençal (Dauphiné, Provence) adre(i)t, Old Provençal adreg, adret literally, good, suitable (i.e., the good side of the mountain for vineyards, etc.); see adroit
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018