English rendering sharpen a millstone’s grooves Literal translation: “tighten the millstone”
To chip worn teeth of a millstone or grain mill to make them sharp.
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Writing text맷돌 죄다
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2 meanings Wreck something or settle a quarrel Crush and ruin an object or spoil an undertaking 
Bob one’s head or body Nod one’s head or body as though pounding a mill 
Housewife Literally, someone who handles the rice pot; a vulgar expression for a housewife, the woman managing a household 
Sell liquor Work as a liquor seller 
Make someone sell liquor Make someone engage in selling liquor. 
Insert a straining basket Insert a cylindrical straining basket to draw off liquor or soy sauce 
be helplessly at another’s mercy An expression for helplessness, meaning meat placed on a chopping board. 
Wear a winnowing basket for bedwetting For a child who wet the bed to put a winnowing basket over their head and be punished by going about to ask for salt the next morning 
keep something good hidden away To conceal something good for oneself. 
come under criticism For something to become the object of criticism. Browse in Hangul order.
WORDROW Korean Idioms