From Longman Dictionary of Contemporary Englishhillockhill‧ock /ˈhɪlək/ noun [countable] especially British English DNa little hill
Examples from the Corpus
hillock• The pyre stood ready on a hillock.• Some make hillocks thirty feet across, while others are happy with mounds of grass clippings.• Its boiling substance sprayed across the dune beyond, lacquering the metallic hillock.• Given better fortune, shots that bounced off hillocks and into bunkers might have bounced on to greens.• We may raise again the hillocks and dig the vales.• Climb the hillock which lies ahead.• Spurred on by a new hope, she ran across the road and scrambled up the smooth grassy side of the hillock.Origin hillock (1300-1400) hill + -ock “small” (from Old English -oc) 