Word Origin & History
truckle"small wheel or roller," 1397, from Anglo-Fr. trocle, from L. trochlea "a small wheel, sheaf of a pulley," from Gk. trokhileia "a pulley," from trokhos "wheel," from trekhein "to run," from PIE base *dhregh- "to run" (cf. O.Ir. droch "wheel," Lith. pa-drosti "to run fast"). Truckle bed "small bed on
wheels that can be stowed under a larger bed" is from 1459.
truckle"give up or submit tamely," 1612, "sleep in a truckle bed" (see
truckle (n.)). Meaning "give precedence, assume a submissive position" (1656, implied in truckling) is perhaps in allusion to that type of bed being used by servants and inferiors, or from it simply occupying the lower position.