Definitions

1. verb

to observe or watch something, especially using a periscope or a similar device.

“The soldiers periscian the enemy’s camp to gather intelligence.”

2. verb

to look out or see through a periscope or other device.

“She periscianed over the wall to get a glimpse of the party on the other side.”

3. noun

a person who periscianes or looks out through a periscope or similar device.

“The periscian was tasked with monitoring the surveillance footage.”