Jew-bush jew·bush uncommon noun 1. low tropical American shrub having powerful emetic properties SynonymsJewbushJew bushredbird cactusredbird flowerPedilanthus tithymaloides 2. low tropical American shrub having powerful emetic properties SynonymsJewbushJew-bushJew bushredbird cactusredbird flowerPedilanthus tithymaloides Related words Broader terms slipper spurge WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.