tiro(redirected from Marcus Tullius Tiro)
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n a traditional preparation originating from Nigeria, used for cosmetic purposes and as a medicine for the eyes. It is applied to the inner surface of the eyelid, and its application and use is very similar to al kohl and surma. Tiro contains high concentrations of lead; therefore, poisoning is a potential risk associated with its application and use. See also al kohl and surma.