What is "knolls"

Usage examples of "knolls".

The city government, seeing all those taxable middle-income and upper-income people moving just outside the city limits into an area called Twin Knolls, simply shifted the city limits around a little, and very quietly Twin Knolls became a part of the city and its tax structure.

The middle and upper-income people promptly moved farther out, and lower-middle-income people like plainclothes detectives moved into Twin Knolls in their place.

The prosperous main body of Hrabb, a clutch of marble-studded knolls, was overloomed by a craga tall, ragged eruption of naked rock from the riverside hills.