각골난망

Recently I've take up learning  사자성어=) It's a kind of expression consisted of 4 chinese characters.

Having submitted my  previuos post  about Gyeongju, I've remembered this expression -
각골난망 (刻骨難忘). This means "remembering forever", "cherish the memory of..."
I never forget my trip to Korea and especially in Gyeongju  !! 각골난망

Let's analyze the characters:
   刻 means "to cut out, to engrave, to carve"
   骨 means "a bone, a secret, an essense"
   難 means "difficult"
   忘 means "to forget'

So, 각골난망 literally means "something engraved in bone (mind) is difficult to forget"....