A basic knot used to join two ropes of similar thickness; known for its reliability and ease of untying.
I tied the ropes securely with a square knot.
The square knot is one of the knots that is hard to come undone.
Compound of 本 (hon, 'main' or 'true') and 結び (musubi, 'knot'), literally 'true knot', referring to its status as a fundamental and reliable knot.