rose chafer ro·sec·ha·fer uncommon noun 1. a common metallic green European beetle: larvae feed on plant roots and adults on leaves and flowers of e.g. roses Synonymsrose chaferrose beetleCetonia aurata 2. common North American beetle: larvae feed on roots and adults on leaves and flowers of e.g. rose bushes or apple trees or grape vines Synonymsrose chaferrose bugMacrodactylus subspinosus Related words Broader terms melolonthid beetlescarabaeid beetle Parts MacrodactylusCetonia WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.