| aculeate | (adj) having or resembling a stinger or barb, Syn. aculeated |
| barbados gooseberry | (n) West Indian woody climber with spiny stems and numerous fragrant white flowers in panicles followed by small yellow to orange fruits, Syn. Barbados-gooseberry vine, Pereskia aculeata |
| butcher's broom | (n) shrub with stiff flattened stems resembling leaves (cladophylls); used for making brooms, Syn. Ruscus aculeatus |
| cockspur | (n) small spiny West Indian tree, Syn. Pisonia aculeata |
| grugru | (n) tropical American feather palm having a swollen spiny trunk and edible nuts, Syn. gri-gri, Acrocomia aculeata, grugru palm, macamba |
| holly fern | (n) tropical Old World fern having glossy fronds suggestive of holly; sometimes placed in genus Polystichum, Syn. Cyrtomium aculeatum, Polystichum aculeatum |
| jerusalem thorn | (n) large shrub or shrubby tree having sharp spines and pinnate leaves with small deciduous leaflets and sweet-scented racemose yellow-orange flowers; grown as ornamentals or hedging or emergency food for livestock; tropical America but naturalized in southern United States, Syn. horsebean, Parkinsonia aculeata |
| scup | (n) porgy of southern Atlantic coastal waters of North America, Syn. southern porgy, southern scup, Stenotomus aculeatus |
| three-spined stickleback | (n) of rivers and coastal regions, Syn. Gasterosteus aculeatus |