- grillA grating; a grid of wire or a sheet of material with a pattern of holes or slots, usually used to protect something while allowing the passage of air and liquids. Typical uses: to allow air through a fan while preventing fingers or objects from passing; to allow people to talk to somebody, while preventing attack.
- creelA woven basket, especially a wicker basket.
- graticuleThe network of lines of latitude and longitude that make up a coordinate system such as the one used for charts and maps of the Earth.
- craticularRelating to a resting phase in the growth of diatoms during which their valves are expanded