oil hole
noun
A small hole in a machine through which oil can be passed for lubricating.
Origin
Mid 19th century.
- hydrophobicity
- hydrophone
- hydrophyte
- hydrophytic
- hydroplane
- hydroponic
- hydroponically
- hydroponics
- hydropower
- hydroquinone
- hydroslide
- hydrospeed
- hydrospeeding
- hydrosphere
- hydrostatic
- hydrostatical
- hydrostatically
- hydrostatics
- hydrosulfite
- hydrosulphite
- hydrotherapist
- hydrotherapy
- hydrothermal
- hydrothermally
- hydrothermal vent