1. 威慑力量;威慑因素;遏制物
A deterrent is something that prevents people from doing something by making them afraid of what will happen to them if they do it.

2. 威慑武器
A deterrent is a weapon or set of weapons designed to prevent enemies from attacking by making them afraid to do so.

3. 威慑的;吓阻的;遏制的
If something has a deterrent effect, it has the effect of preventing people from doing certain things.

1. something immaterial that interferes with or delays action or progress

Synonym: hindrancehinderanceimpedimentbalkbaulkcheckhandicap