| water-shield | (n) aquatic plant with floating oval leaves and purple flowers; in lakes and slow-moving streams; suitable for aquariums, Syn. Brasenia schreberi, water-target |
| water-shield | (n) common aquatic plant of eastern North America having floating and submerged leaves and white yellow-spotted flowers, Syn. fanwort, Cabomba caroliniana |
| cabombaceae | (n) in some classifications considered an independent family of water lilies; comprises the genera Cabomba and Brasenia, Syn. subfamily Cabombaceae, water-shield family |