Word

HSK	Not in HSK
FREQUENCY	Unknown

敲钉钻脚 qiāo dīng zuān jiǎo

DEFINITIONS

to make doubly sure (idiom)

CHARACTERS

敲 qiāo HSK 4	strike, beat, pound, hammer; rap
钉 dīng HSK 6	nail, spike; pursue closely
钻 zuān HSK 6	drill, bore; pierce; diamond
脚 jiǎo HSK 3	leg, foot; base, leg, foundation