bronx cheer
[noun]
Synonyms: raspberry, bazoo, bird, boo, catcall, hiss, hoot, pooh, pooh-pooh, razz

[TahlilGaran] English Synonym Dictionary ▲

Bronx cheer /ˌbrɒŋks ˈtʃɪə $ ˌbrɑːŋks ˈtʃɪr/ noun [countable]
American English a sound that you make by sticking out your tongue and blowing, often considered rude Synonym : raspberry British English

[TahlilGaran] Dictionary of Contemporary English ▲

Bronx cheer
[American, informal]
a rude sound you make by holding your tongue between your lips and blowing.
Cindy turned around and blew a Bronx cheer at the kids who'd been teasing her.

[TahlilGaran] English Idioms Dictionary ▲

bronx cheer
n. phr., slang A loud sound made with tongue and lips to show opposition or scorn.
When he began to show anti-union feelings, he was greeted with Bronx cheers all around.

[TahlilGaran] English Idioms Dictionary ▲