truckle /ˈtɹʌkəl/noun 3verb 3forms 3 noun3 •A small wheel; a caster or pulley. •A small wheel of cheese. •Ellipsis of truckle bed. verb3 •To act in a submissive manner; to fawn, submit to a superior.There is no doubt […] that truckling to popularity is the worst political vice. — 1899 •To roll or move upon truckles, or casters; to trundle. •To sleep in a truckle bed. formstruckled · truckling · truckles