noun
foot of a mountain; base of a mountain; foothills
Refers to the lower slopes or the area where a mountain meets the plain.
その村は山裾に広がっている。
The village spreads out at the foot of the mountain.
麓 is a more common and general word for the foot of a mountain; 山裾 often emphasizes the skirt-like spread of the lower slopes.
Compound of 山 (mountain) and 裾 (hem, foot of a hill). The kanji 裾 originally refers to the hem of a garment, metaphorically extended to the base of a mountain.