Noun
restrictor (plural restrictors)
Anything that restricts
Earnhardt swept both races for the year at Talladega, leading some to conclude that Earnhardt's talent had become limited to the restrictor plate tracks, which require a unique skill set and an exceptionally powerful racecar to win. Source: Internet
NASCAR eventually adopted a restrictor plate to limit top speeds for the 7.0L engine as teams switched to small-block 358 cu.in. (5.9L) engines. Source: Internet
It is one of the four restrictor plate races on the Sprint Cup schedule. Source: Internet
The R8s (which were built to old LMP900 regulations) received a narrower air inlet restrictor, reducing power, and an additional convert of weight compared to the newer LMP1 chassis. Source: Internet
This later became known as restrictor plate racing. Source: Internet
We say that the rate of water flow through an aperture restrictor is proportional to the difference in water pressure across the restrictor. Source: Internet