posta
feminine noun
relay leg, leg of a relay race
"Corrí la última posta y gané."
I ran the last relay leg and won.
adjective
Slangreal, genuine, true
Argentina"Ese consejo fue posta, me sirvió mucho."
That advice was genuine, it helped me a lot.
adverb
Slangreally, seriously, for real
Argentina"¿Posta vas a dejar el trabajo?"
Are you seriously going to quit the job?