沁 is composed of the 水 (shuǐ) radical on the left and the character for "Heart": 心 (xīn) on the right. When used as a noun, 沁 is the name of a river in 山西 (Shanxi) province. When used as a verb, 沁 means "Permeate" or "Seep", like a sponge absorbing water.