Senses
回头路/ 回頭路 a way out
a path to extricate oneself from a situation or to undo a mistake; a way to turn back
回头路/ 回頭路 the road back
the physical road back to where one came from
回头路/ 回頭路 regression
a retreat or backward step, especially in a metaphorical sense; an old way of doing things that has been abandoned