biker's nod
i couldn't lift my hands off the handlebars to say hi to that guy passing me on the road, so i gave him the biker's nod instead
"greeting common among cyclists passing each other on the road
"i couldn't lift my hands off the handlebars to say hi to that guy passing me on the road, so i gave him the biker's nod instead" What is the definition of "biker's nod"?