blocker

[ blok-er ]

noun

1. a person or thing that blocks.
2. Football. a player whose assignment or special skill is blocking. block.
3. Biochemistry. a substance that inhibits the physiological action of another substance, as the beta blocker propranolol that interferes with neurotransmitters in the sympathetic nervous system.

blocker

/ ˈblɒkə /

noun

1. a person or thing that acts as a block
2. physiol an agent that blocks a physiological function, such as the transport of an ion across an ion channel

Word History and Origins

Origin of blocker¹

Middle English word dating back to 1200–50; block, -er ¹

Example Sentences

The same woman tried to get Doe’s attention so she could act as a “crotch blocker” to deter Hegseth’s sexual advances, according to the report.

From Los Angeles Times

One of the biggest blockers in Baku was said to be Saudi Arabia, which heads up a group of fossil fuel producing countries that want to slow the transition to renewables.

From BBC

Gender-affirming care involves social transitioning, puberty blockers, hormone therapy, or surgical procedures.

From Salon

This treatment through social transitioning, puberty blockers, or hormone therapy can be lifesaving for children, and more than 30 medical associations have issued policy statements that support its use.

From Salon

The Bruins’ rushing attack is last in the country but their running backs have found other ways to influence the game, primarily as receivers and blockers.

From Los Angeles Times