throttling groove

throttling groove

[′thräd·əl·iŋ ‚grüv]
(ordnance)
A groove of varying width or depth cut on the interior wall of some recoil cyclinders of a gun to control the passage of oil, hence controlling the recoil resistance.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Throttling groove adopts slender hole; flow state is laminar flow because the flow is not free when viscous fluid flows through the throttling groove.