1) A cliff or a precipitous, rocky slope.
1673 had trailed a horse of the said Geo. downe a great scarr, Ridley
1706 the inhabitants of Ealand are great sufferers by their cattell falling down the hills and scarrs ... they have petitioned that a convenient wall or defence be made to prevent the same. It is a common place-name element, with examples quoted by Smith from the thirteenth century.