blocker

[ blok-er ]

/ ˈblɒk ər /

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noun

a person or thing that blocks.

Football. a player whose assignment or special skill is blocking.

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.

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Origin of blocker

Middle English word dating back to 1200–50; see origin at block, -er¹

Words nearby blocker

block coal, block coefficient, block diagram, blocked, blocked shoe, blocker, block faulting, blockflöte, block front, block grant, blockhead

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use blocker in a sentence

The furry cuffs serve as excellent wind and snow blockers while stopping cold outside air from getting through to your fingers.
Best mittens: Keep your hands cozy|PopSci Commerce Team|February 8, 2021|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.
Why a tweet from California’s AG about a global privacy tool has companies scrambling|Kate Kaye|February 8, 2021|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.
The NFL’s conference title games will feature an endangered species: The pocket passer|Adam Kilgore|January 21, 2021|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.
A 300-pound former defensive lineman has become an offensive playmaker for the Ravens|Roman Stubbs|January 15, 2021|Washington Post

Ad blockers on digital devices are an interesting example of what could become a structural shift in the digital world.
Big Tech’s attention economy can be reformed. Here’s how.|Gideon Lichfield|January 10, 2021|MIT Technology Review
The former NFL linebacker is known for his starring role in Old Spice "Odor Blocker Body Wash" ads.
The 10 Best Expendables Kills|Sujay Kumar, The Daily Beast Video|August 11, 2010|DAILY BEAST
Their work has focused on Propranolol, a beta-blocker that has been on the market for several years to treat hypertension.
How to Erase Your Memories|Casey Schwartz|November 7, 2008|DAILY BEAST
You have tried to block me every way you could, and you're a regular little prize blocker.
The Ghost Breaker|Charles Goddard
Returning from the herd shortly after his arrival, I recognized in our guest John Blocker, a prominent drover.
The Outlet|Andy Adams
Mr. Blocker's Bat, which he carried through a whole season without scoring once off it.
Punch, or the London Charivari, Vol. 107, December 22, 1894|Various
He was a cap-blocker, and in the busy season his earnings ranged from ten to fifteen dollars a week.
The Imported Bridegroom|Abraham Cahan
Blocker's foreman, disdaining an invitation to dismount, saluted his host.
Wells Brothers|Andy Adams

British Dictionary definitions for blocker

blocker

/ (ˈblɒkə) /

noun

a person or thing that acts as a block

physiol an agent that blocks a physiological function, such as the transport of an ion across an ion channel

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012