restraintre·straint /rɪˈstreɪnt/ noun [countableC, uncountableU] a rule or principle limiting what countries, companies etc can sell, advertise, buy etcBeijing promised to ease import restraints and buy more U.S. products.
The regulations were ruled to be an unreasonable restraint of trade.
restraint onregulationsimposing restraints on competition
→ price restraint → wage restraint