- noun a groove in a shaft for meshing or engaging with another component
Cars & Driving
- noun any one of a series of narrow slots cut down the length of a shaft (external splines) that fit into corresponding grooves in a mating part (internal splines); used to prevent movement between two parts, especially in transmitting torque
- A piece of metal or wood used to join two pieces of wood, such as decking, together. See also false tongue, feather, slip feather, slip tongue.