cactus

1. (botany) Any member of the family Cactaceae, a family of flowering New World succulent plants suited to a hot, semi-desert climate.Examples: "On the mountains a few junipers and piñons are found, and cactuses, agave, and yuccas, low, fleshy plants with bayonets and thorns."; "This was another experimental garden started under Dr. Berry as a ‘Nopalry’ or place for the rearing of the cochineal insect on cacti, which however, became a sort of experimental garden where exotic plants were received as they arrived in the Port of Madras and were nursed and looked after until they could be despatched to the interior stations."; "Three years later, the unwatered cactus was still about two feet tall, a dark green color. The watered cactus was a paler green, its trunk visibly swollen with moisture. It had grown to be over five feet tall."