at one's mother's knee
US /æt wʌnz ˈmʌðərz niː/
UK /æt wʌnz ˈmʌðərz niː/

1.
sejak kecil, dari zaman kanak-kanak
from a very early age; from childhood
:
•
He learned to play the piano at his mother's knee.
Dia belajar bermain piano sejak kecil.
•
She was taught good manners at her mother's knee.
Dia diajar adab yang baik sejak kecil.