1. Of a stimulus just strong enough to be consciously experienced 
2. At a threshold or transitional stage

Encyclopedia: Liminal

• rout out
• rout up
• route
• routeman
• routemarch
• router
• router plane
• routine
• routinely
• routinise
• routinize
• roux
• roué
• rove
• rove beetle
• rover
• roving
• row
• row house
• row of bricks
• rowan
• rowan tree
• rowanberry
• rowboat
• rowdily