Early 20th century; earliest use found in Shotley Magazine. Origin uncertain; apparently from the nickname of a naval instructor, Chief Petty Officer ‘Nosey’Parker + -er.
Definition of nozzer in US English:
nozzer
nounˈnɒzə
British slang
A new recruit, a novice sailor.
Origin
Early 20th century; earliest use found in Shotley Magazine. Origin uncertain; apparently from the nickname of a naval instructor, Chief Petty Officer ‘Nosey’Parker + -er.