English
Snoopy cap
From Snoopy + cap, from the comic strip Peanuts having an association with NASA and the cap wrapping around an astronaut’s head like a dog’s ears.
Latin caput ‘head’
Late Latin cappa ‘cap, hood, cape’
Proto-West Germanic *kappā ‘covering, hood, mantle’
Old English cæppe ‘cap, hood’
Middle English cappe ‘cap’
English cap
Today it means
noun A piece of headgear worn by astronauts with built-in communications technology.
Language periods are conventional ranges, not dates for this word.
Etymograph / Snoopy cap