D defs.my
Entry 2 senses Webster, 1913

Water rocket

/wôt'-ẽr räk'-ət/ · Wa·ter rock·et · IPA /ˈwɔːtə(ɹ)ˌɹɒkɪt/
01 A cruciferous plant (Nasturtium sylvestre) with small yellow flowers.
  1. 1.
    A cruciferous plant (Nasturtium sylvestre) with small yellow flowers.(Bot.)
  2. 2.
    A kind of firework to be discharged in the water.