ber·lin or ber·line 
(bər-lĭn)
(bər-lĭn)n.
A four-wheeled closed carriage with an exposed seat to the rear.
[After Berlin, Germany.]
berlin- impeder
- impediment
- impedimenta
- impedimental
- impedimentary
- impel
- impeller
- impend
- impendence
- impendent
- impenetrability
- impenetrable
- impenetrableness
- impenetrably
- impenitence
- impenitent
- impenitently
- imperative
- imperatively
- imperativeness
- imperator
- imperatorial
- imperceptibility
- imperceptible
- imperceptibleness