What is pl. (Med.) The inspissated juice of several species of aloe, used as a purgative. [Plural in form but syntactically singular.] American aloe, Century aloe, the agave. See Agave called?

aloe — pl. (Med.) The inspissated juice of several species of aloe, used as a purgative. [Plural in form but syntactically singular.] American aloe, Century aloe, the agave. See Agave. (Webster's 1913.)

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