خافور doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has an entry for it. Select the entry below for the full classical Arabic definition.

• خَافُورٌ

  خَافُورٌ خافور A certain plant, (As, S, K,) which ants collect in their habitations, (TA,) resembling tares, or darnel, (زُوَان,) (K,) i. e., in form; said to be so called because its odour puts a stop to the carnal desi…

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