remora /remˈə-rə/

1. The sucking-fish, formerly believed to stop ships by attaching its sucker
2. An obstacle (figurative)

• re-serves
• reserves
• re-serving
• reserving
• reservist
• reservists
• reservoir
• reservoired
• reservoiring
• reservoir rock
• reservoirs
• reset
• resets
• resetted
• resetter
• resetters
• resetting
• resettle
• resettled
• resettlement
• resettlements
• resettles
• resettling
• res extincta
• res gestae