foot fault
US /ˈfʊt fɔːlt/
UK /ˈfʊt fɔːlt/

1.
kesalahan kaki
an instance of a player serving in tennis or volleyball touching or crossing the baseline with their foot before hitting the ball
:
•
The umpire called a foot fault on the player, costing them the point.
Pengadil memanggil kesalahan kaki pada pemain, menyebabkan mereka kehilangan mata.
•
To avoid a foot fault, make sure your feet stay behind the line when serving.
Untuk mengelakkan kesalahan kaki, pastikan kaki anda kekal di belakang garisan semasa melakukan servis.