Word

HSK	Not in HSK
FREQUENCY	Unknown

敲釘鑽腳 qiāo dīng zuān jiǎo

DEFINITIONS

to make doubly sure (idiom)

CHARACTERS

敲 qiāo HSK 4	strike, beat, pound, hammer; rap
釘 dīng	nail, spike; pursue closely
鑽 zuān	drill, bore; pierce; diamond
腳 jiǎo	foot; base, leg, foundation