bollard

/'bɔləd/

Thân thiện

The city installed a new bollard to protect the pedestrian crossing.

Definition

Noun: 1. A short, strong vertical post: A sturdy post, typically made of metal, concrete, or wood, installed on a street, quay, ship's deck, or other area to control traffic, secure ropes, or act as a barrier. 2. A mooring post: Specifically, a post on a wharf, quay, or ship used for attaching mooring lines to secure vessels.

Usage and Examples

• As a traffic control barrier: > The city installed removable bollards to create a pedestrian-only zone. > The entrance to the square is blocked by decorative iron bollards.
• As a maritime mooring point: > The sailor quickly looped the rope around the bollard on the dock. > The ship's deck had several heavy bollards for securing lines during storms.

Advanced Usage

• "Rising bollard" or "retractable bollard": A bollard that can be lowered flush with the ground or raised electronically to control vehicle access at specific times. > Only authorized vehicles can pass after the retractable bollards are lowered.
• "Security bollard": A bollard designed to withstand vehicle impact, used for protective perimeter security around buildings. > Security bollards were placed in front of the embassy to prevent ramming attacks.

Variants and Related Words

• Bollard is the standard term. The concept is specific, and there are no direct common variants of the word itself. Related objects include:
  • Cleat (noun): A T-shaped or two-horned metal fitting on a dock or boat for securing ropes. (Differs in shape and common use from a bollard).
  • Bitt (noun): A pair of strong posts on a ship's deck for securing heavy ropes or cables. (Similar maritime function, but typically refers to a paired set).

Synonyms

• Post: A long, sturdy piece of timber or metal fixed upright. (A more general term; a bollard is a specific type of post).
• Pile: A heavy beam or post driven into the ground as a foundation or support. (Often larger and part of a structure, whereas a bollard is usually a standalone barrier or tie-point).
• Stanchion: An upright bar, post, or frame forming a support or barrier. (Can be similar, but often refers to posts supporting a railing or rope).

Idioms and Common Phrases

• There are no common idioms that use the word bollard. Its usage is almost entirely literal, describing the physical object.

Học thuật

Noun

1. a strong post (as on a wharf or quay or ship for attaching mooring lines)
   • the road was closed to vehicular traffic with bollards

Từ đồng nghĩa

• bitt