to require; to need; to want; necessity; need
Pictograph of a person standing under the rain (雨), representing the meaning "become wet", now written as 濡. The current meaning is a phonetic loan. The person component was later replaced with the phonetic component 而.
《說文》：“需，也，遇雨不進止也。从雨，而聲。《易》曰：‘雲上於天，需。’”
become wet