1. Plural of musca; flies, especially houseflies or other dipteran insects.
Usage: Latin plural form; used in scientific and medical contexts
2. In astronomy, Musca Australis (the Southern Fly), a constellation in the southern sky.
Usage: astronomy; proper noun in astronomical contexts
3. Floaters or spots in the visual field caused by particles in the vitreous humor of the eye.
Usage: medical; from Latin muscae volitantes (flying flies)

Examples

• The biologist studied various muscae under the microscope.
• Muscae Australis is visible from the Southern Hemisphere.
• The patient complained of muscae volitantes in both eyes.
• Several muscae were attracted to the fruit bowl.
• Ancient astronomers named the constellation Muscae after common insects.