collision course

Noun collision course has 2 senses

• collision course(n = noun.object) Array - a course of a moving object that will lead to a collision if it continues unchanged; Array
is a kind of course, path, track

• collision course(n = noun.act) Array - a course of action (following a given idea) that will lead to conflict if it continues unabated; Array
is a kind of course, course of action