weathercock• On the exterior is an octagonal spire, called the Torre de Gallo, after its weathercock.• Carol looked up at the weathercock as the car drew up at her house in the cobbledsquare.• Sharpe looked up at the weathercock on the stableroof and saw the wind had backed southerly.• In a wind, however, the model will only turn until the trimoffset is balanced by the weathercock effect.• The bunch pulled out by the weathercock had left the rest of the twigsloose in their binding.• It had been going more and more slowly since diving down from the weathercock.• These are designed, rather on the principle of the weathercock, to orientate themselves to the instantaneous local air movement.• We have already seen that the weathercock effect due to forwardflight makes the tailrotor too effective.