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

He was a solid run blocker for the Super Bowl champion Philadelphia Eagles last season.

Read more on Los Angeles Times

Alt had replaced blind-side blocker Rashawn Slater, who was injured in training camp, meaning the Chargers are already on their third left tackle, second right tackle and second right guard.

Read more on Los Angeles Times

Going back to last season, the use of a 'blocker' was a common tactic.

Read more on BBC

Other medical care, such as therapy and puberty blockers, are more common.

Read more on Los Angeles Times

The term “gender-affirming care” can refer to therapy, hormone blockers or surgical procedures.

Read more on Los Angeles Times