Groove: (also 'score line, scoring') markings (usually horizontal and linear) etched into the face of a golf club to enhance spin direction and decrease hydroplaning (grooves come in different types based on their shape or appearance, e.g., v grooves, square or box grooves, u grooves, etc. And are regulated by the rules of golf)

 

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Groove: (also 'score line, scoring') markings (usually horizontal and linear) etched into the face of a golf club to enhance spin direction and decrease hydroplaning (grooves come in different types . . . View Full Definition

T and G, Tongue And Groove: A joint made by a tongue (a rib on one edge of a board) that fits into a corresponding groove in the edge of another board to make a tight flush joint. Typically, the subfloor plywood is T & G.

Chip Breaker: A small groove ground back of the cutting edge on the top of a cutting tool to keep the chips short.

Castle Nut: A nut with grooves cut entirely across the top face for the purpose of resisting loosening with vibration.