bourrelet
nounEtymology Borrowed from French bourrelet.
1
Engineering, Firearms, Government, Military, Natural sciences, Physical sciences, Politics, Tools, War, Weaponry An accurately machined portion around the diameter of a shell of a gun, which acts to increase accuracy of projectile fit to the barrel.
- The bourrelet is a slightly raised surface on the rocket designed to maintain a light contact with the inside of the launching tube to center the rocket when fired.2019, Thomas Gersbeck, Practical Military Ordnance Identification, 2nd edition, CRC Press, →ISBN, page 111:
2
An escoffion.
3
A raised rim around a footprint consisting of sediment displaced by the pressure of the step.
- Coordinate terms
- driving band, ogive