movable barrier
Học thuậtThân thiện
Definition
Noun: A movable barrier is a physical obstruction or structure designed to block, restrict, or control access, which is not fixed permanently in place and can be repositioned or opened to allow people or objects to pass through.
Usage
This term is used to describe a wide range of objects that serve as temporary or adjustable gates, doors, or blockades. It emphasizes the key feature of being able to be moved aside when passage is required. - The parking garage entrance was blocked by a heavy movable barrier. - For the event, they used a movable barrier to create a separate VIP section.
Advanced Usage
- In logistics and safety: Often refers to temporary fencing, retractable belt barriers, or gates used to manage crowds, secure construction sites, or delineate spaces.
- The airport installed new movable barriers to improve passenger flow at security checkpoints.
- In historical or architectural contexts: Can describe structures like portcullises (heavy grilled gates) in castles, which were raised and lowered.
- The castle's defense relied on its movable barrier, the portcullis.
Variants and Related Words
- Barrier (n): A general term for any fence, wall, or object that blocks movement or access.
- Gate (n): A hinged barrier used to close an opening in a wall or fence.
- Turnstile (n): A type of movable barrier with rotating arms that allows people to pass one at a time, often for counting or ticketing.
Synonyms
- Portable barrier
- Temporary barrier
- Gate
- Fence (when not permanently installed)
Related Phrases
- Retractable barrier: A movable barrier, often a post with a connected belt or rope, that can be extended and locked in place.
- Crowd control barrier: A specific type of movable barrier, often made of metal and interlocking, used to manage large groups of people.
Noun
- a barrier that can be moved to allow passage