1. The overground drive for a reciprocating piston pump installed at a borehole (e.g. an oil well)
   - nodding donkey

Encyclopedia: Pump jack

• ngaio
• Ngaio Marsh
• Nganasan
• NGB
• NGF
• NGO
• NGU
• ngultrum
• Nguni
• Nguyen Tat Thanh
• ngwee
• NH
• NHS
• Ni
• Ni-hard
• Ni-hard iron
• Ni-resist
• Ni-resist iron
• niacin
• Niagara
• Niagara Falls
• Niagara River
• Niamey
• nib
• nibbed