reef knot
Học thuậtThân thiện
Definition
- Noun:
- A square knot used in a reef line: A "reef knot" is a specific type of knot, also known as a square knot, traditionally used to tie the reef points (lines) of a sail to reduce its area in strong winds. It is a simple, symmetrical binding knot formed by tying a left-handed overhand knot and then a right-handed overhand knot (or vice-versa).
Usage Examples
- Noun:
- The sailor quickly tied a reef knot to secure the sail.
- For joining two ropes of equal thickness, a reef knot is often recommended, but it can be unreliable if not properly tightened.
- The first knot you should learn for basic camping is the reef knot.
Advanced Usage
- "To tie a reef knot": The standard verb phrase for creating this knot.
- Make sure you know how to tie a reef knot before we go sailing.
Variants and Related Words
- Square knot (n): The common alternative name for a reef knot, especially in non-sailing contexts like scouting or first aid.
- In the Boy Scouts, they teach you to tie a square knot.
- Reef (v): The action of reducing a sail's area by folding or rolling part of it and securing it with reef points, for which the reef knot is used.
- We need to reef the mainsail before the storm hits.
Synonyms
- Square knot: The direct synonym, emphasizing its symmetrical, "square" shape when properly tied.
- Binding knot: A general category of knots used to tie a rope around an object; a reef knot is a simple binding knot.
Related Phrases
- Reef points (n): The short lines on a sail that are tied together using reef knots to secure the reefed portion of the sail.
- Check that all the reef points are securely fastened.
- Slip knot: A contrasting knot that can be easily untied by pulling a free end; a reef knot is not a slip knot and can jam if pulled tight.
Notes on Usage
- A reef knot is intended for binding and joining two ends of the same rope or two ropes of similar size. It is not recommended for critical loads or safety applications, as it can capsize (come undone) or jam under certain conditions. It is most reliable when used for its traditional purpose on sails or for tying packages.
Noun
- a square knot used in a reef line