Origin of truckle
- Middle English trocle pulley from Anglo-Norman from Latin trochlea system of pulleys trochlea
From American Heritage Dictionary of the English Language, 5th Edition
- From a back formation of truckle bed (a bed on which a pupil slept, because it was rolled on casters into a lower position under the master's larger bed), from Middle English trookylbed. Compare also trundle bed. Assisted by false association with Middle English *trukelen, truken, trokien, trukien, from Old English trucian (“to fail, diminish"), Low German truggeln (“to flatter, fawn"), see truck.