crewel /ˈkɹuː.əl/noun 1verb 1forms 5 noun1 •Worsted yarn, slackly twisted, used for embroidery.First for a May-fly: you may make his body with greenish colored crewel or willowish color — 1653 verb1 •To make (embroidery) using the crewel method. formscreweled · crewelled · creweling · crewelling · crewels