https://homosaurus.org/v3/homoit0000605 homoit0000605 Hair 2019-05-14 xsd:date 2021-12-08 xsd:date https://homosaurus.org/v3/homoit0001259 Secondary sex characteristics https://homosaurus.org/v3/homoit0002287 Mustaches Threadlike strands of keratin growing out of the skin on the body. Use in reference to hair as a secondary sex characteristic or as a form of self expression.