吐丝 Traditional form: 吐絲 Pinyin (reading): tǔsī Definitions: (of spiders, caterpillars, silkworms etc) to extrude silk Characters: 吐 - to vomit, to spew out, to cough up; to say 丝 - silk, fine thread; wire; strings Traditional characters: 吐 - to vomit, to spew out, to cough up; to say 絲 - silk, fine thread; wire; strings