living_rock has definitions from the field of botany
1
[ noun ] (botany) usually unbranched usually spineless cactus covered with warty tubercles and having magenta flowers and white or green fruit; resembles the related mescal; northeastern Mexico and southwestern United States

Related terms

cactus Ariocarpus

2
[ noun ] (botany) highly succulent stemless clump-forming plants with gray-green leaves similar in texture to lumps of granite; South Africa

Related terms

succulent Pleiospilos

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