Home › Words › R › rockstonerockstonerockstone means A town in Upper Demerara-Berbice, Guyana.EtymologyFrom rock + stone.nameA town in Upper Demerara-Berbice, Guyana.nounA pebble.e.g.“Without wasting many words, however, the youth picked up a "rockstone," as pebbles are called in Jamaica, and delivered the missile with so skilful an aim, that the bird dropped to the ground, […]” — 1847, Philip Henry Gosse, Richard Hill, The Birds of Jamaica, page 274:Definitions & examples from Wiktionary (CC BY-SA 3.0).