opsiometer /op-si-omˈi-tər/

An optometer

• plough back
• ploughboy
• ploughboys
• ploughed
• plougher
• ploughers
• ploughgate
• ploughgates
• plough in
• ploughing
• ploughings
• plough-iron
• plough-irons
• plough-jogger
• plough-joggers
• ploughland
• ploughlands
• ploughman
• ploughman's lunch
• ploughman's lunches
• ploughman's spikenard
• ploughmen
• Plough Monday
• plough on
• plough one's way through