1. Belonging to them

Sounds like: there's

Encyclopedia: Theirs

• renal vein
• rename
• renascence
• renascent
• Renata Tebaldi
• rencounter
• rend
• render
• render-set
• renderer
• rendering
• rendezvous
• rending
• rendition
• rendzina
• Rene Antoine Ferchault de Reaumur
• Rene Descartes
• Rene Magritte
• Rene-Robert Cavelier
• renegade
• renegade state
• renege
• renege on
• reneger
• renegotiate