معلط doesn't appear in Hans Wehr's Modern Standard Arabic dictionary, but Lane's Arabic-English Lexicon has 2 entries for it, distinguished by diacritics. Select one below for the full classical Arabic definition.

• مَعْلَطٌ

  مَعْلَطٌ ذ The place of the brand called عِلَاط on the neck of the camel: (O, K, TA:) and so, accord. to the K, ; but this latter means the place of the neck of the camel to which one clings [to mount him: see 13]. (TA.)…

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• مُعَلَّطٌ

  مُعَلَّطٌ ذ A camel whose cord called عِلَاط has been pulled off from his neck. (TA.)…

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