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English definition of “cactus”

cactus

noun [C]    /ˈkæk·təs/ (plural cacti  /ˈkæk·tɑɪ/ or cactuses)
any of a type of plant that grows in the desert, having thick stems for storing water and usually spines (= sharp points)
(Definition of cactus noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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