decagon /dekˈə-gon/

A plane figure of ten angles and sides

decagonal /-agˈən-əl/ adjective

• arnas
• Arnaut
• arnica
• arnicas
• arnotto
• arnottos
• arnut
• A-road
• aroba
• a rod in pickle
• aroid
• aroids
• aroint
• arointed
• arointing
• aroints
• aroint thee
• a Roland for an Oliver
• arolla
• arollas
• a rolling stone gathers no moss
• aroma
• aromas
• aromatase
• aromatherapeutic