1. A plant with prickly leaves.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• cactis,
• captues,
• cautus,
• cyctes,
• cactual,
• cactii,
• tactis,
• cacks,
• cacaus,
• carcus,
• cautous,
• cautius,
• catius,
• lectus,
• tactcs,
• cacus,
• caculus,
• gacts,
• caucaus,
• caclus

• cascades,
• cacaos,
• Cactuses,
• carts,
• acts,
• caustic,
• casts,
• Cacti.

The adjective form of the word "cactus" is "cactaceous".

The plural of the "cactus" can be the "cacti".

The singular of the "cactus" can be the "cactus".