remora /remˈə-rə/

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

• cypris
• cyproheptadine
• cyproheptadines
• Cypro-Minoan
• cyprus
• cypruses
• cypsela
• cypselae
• Cyrenaic
• Cyrillic
• cyst
• cystectomies
• cystectomy
• cysteine
• cysteines
• cystic
• cysticerci
• cysticercoses
• cysticercosis
• cysticercus
• cystic fibrosis
• cystid
• cystidean
• cystideans
• cystids