1. (medicine) impairment of acute hearing in old age
   - presbycusis, presbycousis

Encyclopedia: Presbyacusis

• sixfold
• sixpack
• sixpence
• sixpenny
• sixpenny nail
• sixsome
• norfolk island pine
• Norfolk jacket
• Norfolk terrier
• Norfolk wherry
• Norge
• norgestrel
• nori
• noria
• Norinyl
• nork
• Norlestrin
• Norlutin
• norm
• Norma
• Norma Jean Baker
• normal
• normal curve
• normal distribution
• normal dwarf