n. /uy"wit'nis, uy"wit"nis/ ; v. /uy"wit'nis/ , n.
1. a person who actually sees some act, occurrence, or thing and can give a firsthand account of it: There were two eyewitnesses to the murder.
v.t.
2. to view with one's own eyes: to eyewitness a murder.
[ 1530-40; EYE + WITNESS ]