A series of particles or waves traveling close together in parallel paths
A relatively long, straight, rigid piece of metal or other solid material
give someone the shaft
The main pit was a vertical shaft.
The fire was discovered by smoke in the upper shaft.
The shaft is of red granite and is beautifully polished.
This is the long splined shaft with a sixteen inch gear at one end.
A shaft of brilliant sunlight fell through the dusty layers of a horse chestnut tree, landing on the velvet vows of her shoes.