You ever wonder if cross-training should be all one word, two words, or hyphenated? Personally I have no idea myself but in this case hyphenated makes sense, so I’m rolling with it.
The Fit Recovery Cycling Dictionary defines the word cross-train thusly:
: to choose the mountain bike over the road bike on what is clearly a road day. Vice-versa.
“I was going to ride a century tomorrow but I need to shake things up so I’m going to cross-train.”
The word “cross-train” means many things to many people. When used during a conversation with your cycling friends, it only means one thing during the spring, summer or early fall months. This is road season. During the late fall months, the word changes meaning all on its own: to choose the road bike over the mountain bike.
If one becomes discombobulated on which is the correct bike to choose and which version of “cross-train” is acceptable, talk about the weight or awesomeness of your bike. See also the Webster definition of “distraction”