A word used mainly by school students to warn of approaching teachers/authority figures. More effictive that saying "Shhhh" or "Shut-up, teacher", which tends to raise supsicion.
Used to hault a potentially punishable verbal tirade, or merely to instill caution.
Student 2: Mush!
Student 1: Good Afternoon, sir...
This word derived from a Romany word.
Commonly used to replace the word "mate".
Despite the negative connotations this word has attracted in more recent times, this is historically a general term used in the Portsmouth dialect. It is in no way chavvy, save for the fact that most of the real Pomponians left in Portsmouth these days pretty much are chavs.
A more endearing term is "mushty" or "mushdy", often rhymed with "cushdy", which expresses more of a friendly level of acquaintance.
Mate, did you see them mushes Jonno knocked spark out last night?
Cushdy mushdy, thanks for paying me bail.
"No shes/hes not actually italian hes/shes a mush!"