滞塞 Traditional form: 滯塞 Pinyin (reading): zhìsāi Definitions: to obstruct Characters: 滞 - to block, to obstruct; sluggish, stagnant 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress Traditional characters: 滯 - to block, to obstruct; sluggish, stagnant 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress