1. Lasting for an hour
   "an hourlong examination"

See also: long

• rostrate
• rostrum
• Roswell
• rosy
• rosy boa
• rosy-cheeked
• rosy-colored
• rosy-coloured
• rosy-purple
• rot
• rot-resistant
• rota
• Rotarian
• rotary
• rotary actuator
• Rotary Club
• rotary converter
• rotary engine
• Rotary International
• rotary joint
• rotary motion
• rotary press
• rotary wing
• rotatable
• rotate