по́мочи

1.
braces, suspenders
Он подтяну́л по́мочи и встал.
He pulled up his braces and stood up.
Plural only.
2.
leading strings, walking harness, straps, carrying strap
Малыша́ води́ли на по́мочах.
The toddler was led on leading strings.
Plural only; figuratively 'водить на помочах' = keep someone in leading strings.

Examples

Дедушка носил старомодные помочи вместо ремня.
Grandfather wore old-fashioned braces instead of a belt.
Отец купил новые помочи для брюк.
Father bought new braces for his trousers.
Мальчик держался за помочи, когда учился ходить.
The boy held on to the leading reins while he was learning to walk.

This noun exists in plural form only.