Definitions

1. noun

a person who gawks or stares at something, especially a traffic accident or a scene of disaster, in a curious or idle manner

“The rubberneckers were causing a traffic jam by slowing down to look at the accident.”

2. verb

to look at something, especially a traffic accident or a scene of disaster, in a curious or idle manner

“People were rubbernecking at the fire on the other side of the street.”