吸吮 Traditional form: 吸吮 Pinyin (reading): xīshǔn Definitions: to suck on (sth) to suck in Characters: 吸 - to inhale, to suck in; to absorb; to attract 吮 - to suck, to sip, to lick Traditional characters: 吸 - to inhale, to suck in; to absorb; to attract 吮 - to suck, to sip, to lick