This rare adjective describes something that easily wraps around and hinders movement—like clothing that catches on obstacles or entangles the legs during a race. The author of Hebrews uses it to describe 'the sin which clings so closely' (12:1), urging believers to 'lay aside every weight' and this entangling sin that hinders their race of faith. The image is of an athlete stripping away anything that might impede peak performance.