м. slope
~ горы mountainside
hillside
на ~е лет in oneś declining years, in the evening of life
Большой русско-английский словарь
СКЛОН
муж. slope на склоне лет, на склон е дней, на склоне жизни – in one's declining years, in the evening of life, in one's old age береговой склон – bank vault горный склон