What is the meaning of Sextans?

A Roman coin worth one sixth of an as.

a sixth, particularly

1. sextans, a coin worth 1/6 as
2. sextans, a unit of mass equal to 1/6 libra (Roman pound) or 2 uncia (Roman ounce), about 55 g
3. sextans, a unit of area equal to 1/6 juger or 1/3 actus, equivalent to a rectangle with sides of 120×40 pedes (Roman feet), about 420 m²
4. sextans, a unit of volume equal to 1/6 sextarius or 1/36 congius, about 90 mL
5. sextans, a unit of length equal to 1/6 pes (Roman foot) or 2 uncia (Roman inch), about 5 cm

sextans, a coin worth 1/6 as

sextans, a unit of mass equal to 1/6 libra (Roman pound) or 2 uncia (Roman ounce), about 55 g

sextans, a unit of area equal to 1/6 juger or 1/3 actus, equivalent to a rectangle with sides of 120×40 pedes (Roman feet), about 420 m²

sextans, a unit of volume equal to 1/6 sextarius or 1/36 congius, about 90 mL

sextans, a unit of length equal to 1/6 pes (Roman foot) or 2 uncia (Roman inch), about 5 cm

synonym of unus, one, 1/6 of the perfect number six

sextant, a nautical instrument with a sector of 1/6 circle (60°)

Source: wiktionary.org