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Webster 1913 Edition
Musca
‖
Mus′ca
,p
; rop.
 Noun.
pl. 
Muscae 
(#)
. [L., a fly.] 
1. 
(Zool.) 
A genus of dipterous insects, including the common house fly, and numerous allied species. 
☞ Formerly, a large part of the Diptera were included under the genus 
Musca
. 2. 
(Astron.) 
A small constellation situated between the Southern Cross and the Pole. 
Muscae volitantes
. [L., flying flies.] 
(Med.) 
Specks or filaments apparently seen moving or gliding about in the field of vision. Their appearance is often a symptom of disease of the eye, or of disorder of the nervous system.