car pool noun
plural ∼ pools [count] : a group of people who regularly share a car when they are going to and from their jobs or who take turns driving each other other's children to school, activities, etc.
— car·pool 
/ˈkɑɚˌpu:l/ verb, car·pools; car·pooled; car·pool·ing [no obj]
▪ She carpools to work every day with her neighbor.
/ˈkɑɚˌpu:l/ verb, car·pools; car·pooled; car·pool·ing [no obj] ▪ She carpools to work every day with her neighbor.
— car·pool·er noun, plural car·pool·ers [count]
