blocker

Thân thiện

A football player acts as a blocker for the running back.

Definition

Noun: 1. A substance or agent that prevents a specific biological or chemical action: A "blocker" is something that stops or inhibits a process, often by physically obstructing it or interfering with a receptor. This is most commonly used in medical and biochemical contexts. 2. A player in American football whose primary task is to obstruct opponents: In sports, specifically American football, a "blocker" is an offensive player whose job is to physically prevent defensive players from tackling the ball carrier or the quarterback.

Usage Examples

• Noun (Medical/General):

  • Beta-blockers are commonly prescribed to manage high blood pressure and anxiety.
  • Sunscreen acts as a UV blocker to protect the skin from sun damage.
  • The researcher used a channel blocker to study the function of the nerve cell.

• Noun (Sports):

  • The running back followed his lead blocker through the hole in the defensive line.
  • As a tight end, his role is to be both a receiver and a blocker.
  • The team's best blocker was assigned to protect the quarterback's blind side.

Advanced Usage

• "Adrenergic blocker": A type of drug that blocks the effects of adrenaline (epinephrine).
• "Shot blocker": In basketball, a player who is skilled at blocking opponents' shot attempts. (Note: This is a related but distinct compound term from the core definition).

Variants and Related Words

• Block (verb/noun): The root action from which "blocker" is derived. To obstruct or prevent movement or progress.
• Blockade (noun/verb): An act of sealing off a place to prevent goods or people from entering or leaving.
• Blockage (noun): An obstruction that prevents flow or passage.

Synonyms

• Inhibitor: (Medical/Chemical) A substance that slows down or prevents a particular chemical reaction or process.
• Obstructor: One who or that which obstructs.
• Barrier: A fence or other obstacle that prevents movement or access.

Related Phrases

• Blocker to the play: A sports term describing a blocker who is actively engaged in obstructing a defender on a specific play.
• Blocker/releaser: In some contexts, a term for a substance or mechanism that can both inhibit and then permit a process.

Related Idioms

• To put up a blocker: (Informal, derived from sports) To create an obstacle or defense against something.
  • She put up an emotional blocker to avoid dealing with the bad news.

Học thuật

Noun

1. a class of drugs that inhibit (block) some biological process
2. a football player whose responsibility is to block players attempting to stop an offensive play

Từ đồng nghĩa

• blocking agent