roadster

Short definition from Wiktionary

Noun

1. 1
   A horse for riding or driving on the road.
2. 2
   A bicycle, or tricycle, adapted for common roads, rather than for the racing track, usually of classic style and steel-framed construction.
3. 3
   One who drives much; a coach driver.
4. 4
   A hunter who keeps to the roads instead of following the hounds across country.
5. 5
   An open automobile having a front seat and a rumble seat.
6. 6
   A person who lives along the road.
7. 7
   a sea-going vessel riding at anchor in a road or bay.
8. 8
   A clumsy vessel that works its way from one anchorage to another by means of the tides.