壅塞 Traditional form: 壅塞 Pinyin (reading): yōngsè Definitions: variant of 擁塞/拥塞 (yōngsè) Characters: 壅 - to block; to obstruct 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress Traditional characters: 壅 - to block; to obstruct 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress