'Hillock' definitions:

Definition of 'hillock'

(from WordNet)
noun
A small natural hill [syn: knoll, mound, hillock, hummock, hammock]

Definition of 'Hillock'

From: GCIDE
  • Hillock \Hill"ock\, n. A small hill. --Shak. [1913 Webster]

Synonyms of 'hillock'

From: Moby Thesaurus