嚴絲合縫 yán sī hé fèng

DEFINITIONS

  1. to fit tightly (idiom)
  2. to join seamlessly
  3. to fit snugly

CHARACTERS

嚴 yán strict, rigorous, rigid; stern
絲 sī silk; fine thread; wire; strings
合 hé
HSK 4
combine, unite, join; gather
縫 fèng sew, mend