How to write 吮

吮 [shǔn] （动） 【本义】: 用口含吸，缓饮 【造字法】: 形声。从口，允声。 1. 聚拢嘴唇吸。 (To gather the lips and suck.) 例：吮吸 (suck); 吮乳 (suckle); 吮痈舐痔 (metaphorically refers to insincerely flattery towards powerful people by any means possible). 2. 同本义 [En.] suck. 3. 舐 [En.] lick. 【引】 1. 《韩非子·备内》：医善吮人之伤，含人之血。 (From Han Feizi: The doctor is good at sucking the wounds of others, drawing blood.) 2. 李白《蜀道难》：磨牙吮血，杀人如麻。 (From Li Bai's "The Difficulty of the Shu Road": Grinding teeth to suck blood, killing like grass.) 3. 《史记·孙子吴起列传》：母曰:“非然也。往年吴公吮其父，其父战不旋踵，遂死于敌。吴公今又吮其子，妾不知其死矣。” (From Records of the Grand Historian: The mother said, "Not so. In the past, Duke Wu sucked his father, and his father died in battle. Now the Duke Wu sucks his son, and I do not know his death.") 4. 卒有病疽者，起为吮之。 (Those with festering sores should be assisted in sucking.) 【例】 例：吮痈 (suck out the pus from a sore); 吮疮 (suck the poison from a sore); 吮卒 (suck the pus from a soldier's wound); 吮嘬 (suck). 2. 舐 [En.] lick. 例：如: 吮墨 (holding a brush to the mouth, describing the manner of deep thought or writing; dipping a brush in ink); 吮笔，吮毫 (holding the brush; metaphorically refers to the conception of writing or painting).