Bullet hole
A bullet hole was an opening in an object left behind after a bullet had passed through.

The wall of Sherlock Holmes's residence at 221B Baker Street had the initials "V.R." (for "Victoria Regina") written on it in bullet holes. ()

In 2375, Miles O'Brien successfully fired a TR-116 at a melon in the next room. Unaware that the weapon utilized transporter technology, Ezri Dax questioned how that could be the case, as she didn't see any bullet holes. ()

See also 
 Gunshot wound
 Powder burn

Architecture