Caribbean: bus, public transportation
SA: (Quechua) baby, child, girl
Caribbean Spanish-speakers, as well as Spanish-speakers from the Canary Islands, use guagua (often sounding like wawa) to mean public bus or transportation.
Synonyms of q significa wawa are microbus autobus
Used in US as well
"Vamos a cojer el guagua (wawa) en la esquina."