松口sōngkǒu 1.张嘴把咬住的东西放开{unclench the jaws}: 猎犬叼着野兔不～。{The hound is holding a hare in its mouth, and refuses to unclench its jaws.} 2.不坚持(主张、意见等){soften; relent (position, proposal, etc.)}: 怎么劝他,他也不～。{No matter how hard I tried to persuade him, he would not relent.}