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 furry cuffs serve as excellent wind and snow blockers while stopping cold outside air from getting through to your fingers.

From Popular-Science

“Not expecting any impact on ad revenue”Any tangible impact of the browser tool is contingent on more adoption by publishers and ad tech firms, as well as people who don’t already use ad blockers or other privacy controls, suggested Bannister.

From Digiday

They discovered varied benefits, including how it improved the running game by forcing the defense to account for the quarterback, effectively granting them an extra blocker.

From Washington Post

He has been able to fully devote his attention to the offense, which will again rely on him as a lead blocker and potential chess piece in the passing game against Buffalo.

From Washington Post

Ad blockers on digital devices are an interesting example of what could become a structural shift in the digital world.

From MIT Technology Review

The former NFL linebacker is known for his starring role in Old Spice "Odor Blocker Body Wash" ads.

From The Daily Beast

Their work has focused on Propranolol, a beta-blocker that has been on the market for several years to treat hypertension.

From The Daily Beast

You have tried to block me every way you could, and you're a regular little prize blocker.

From Project Gutenberg

Returning from the herd shortly after his arrival, I recognized in our guest John Blocker, a prominent drover.

From Project Gutenberg

Mr. Blocker's Bat, which he carried through a whole season without scoring once off it.

From Project Gutenberg

He was a cap-blocker, and in the busy season his earnings ranged from ten to fifteen dollars a week.

From Project Gutenberg

Blocker's foreman, disdaining an invitation to dismount, saluted his host.

From Project Gutenberg