This is the 15460th most frequent Korean word.
베면
"베면" means "if/when [someone] cuts" or "if/when [someone] lays [a head] down."
Here, '베면' is used as a conditional form of the verb '베다', which means 'to rest (something such as the head)'.
베개 위에 머리를 베면 더 편안해질 거예요.
If you rest your head on the pillow, you will feel more comfortable.
In this sentence, '베면' is used as a conditional form of the verb '베다', indicating 'to cut or trim'.
장미 꽃을 잘못 베면 가지를 다치게 할 수 있어요.
If you cut the rose flower incorrectly, you can damage its stem.
Here '베면' signifies slicing or cutting, referring to dividing an object.