This is the 9900th most frequent French word.
flancs
Sides or flanks (of a body or an object).
Here, 'flancs' refers to the sides or slopes of a mountain, describing its physical geography.
Les flancs de la montagne étaient recouverts de forêts denses.
The mountain's slopes were covered with dense forests.
In this context, 'flancs' denotes the sides of the horse's body, illustrating an aspect of its anatomy.
Il marcha le long des flancs du cheval pour le préparer.
He walked along the horse's sides to prepare it.
Here, 'flancs' is used metaphorically to denote the strategic sides of an enemy formation in a military context.