remora /remˈə-rə/

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

• fire door
• fire doors
• firedrake
• firedrakes
• fire drill
• fire drills
• fire-eater
• fire-eaters
• fire-edge
• fire-edges
• fire engine
• fire engines
• fire escape
• fire escapes
• fire extinguisher
• fire extinguishers
• fire-eyed
• firefight
• firefighter
• firefighters
• firefighting
• firefights
• fire-flag
• fire-flags
• fire-flaught