opening restrictor
nounUK /ˈəʊpənɪŋ rɪˈstrɪktə/
US /ˈoʊpənɪŋ rɪˈstrɪktər/
A thing that makes a hole smaller so less air or water can go through.
The plumber put an opening restrictor on the pipe to slow the water down.
RELATED WORDS
OTHER MEANINGS
2. A device on a window or door that stops it from opening too wide.
The opening restrictor on the window keeps children from falling out.
3. A safety part in a machine that limits how far a lid or cover can open.
The opening restrictor on the press keeps the cover from swinging too far.
4. A fitting that narrows a pipe or tube to control how much liquid passes.
They added an opening restrictor to balance the pressure in the two pipes.