松口气 sōngkǒuqì to breathe a sigh of relief Origin Definitions Defs Strokes Stroke Words Sentences Sents 松 鬆 sōng verbadjective to loosen to slacken or relax; to untie; to let go; to release口气 口氣 kǒuqì noun breath The odor or air coming from a person's mouth.