"The bath" is one literal English equivalent of the Italian phrase il bagno. The pronunciation of the masculine singular phrase -- which also translates as "the (act of) bathing," "the bathroom," and "the bathrub" -- will be "eel BA-nyo" in Italian.
"Where is the toilet?" in English is Dov'è il bagno? in Italian.
"Bathroom" in English is (il) bagno in Italian and (la) salle de bains in French.
"To bathe" is an English equivalent of the Italian phrase fare il bagno. The present infinitive, masculine singular definite article and noun in question literally translate into English as "to do (make) the bath." The pronunciation will be "FA-rey eel BA-nyo" in Italian.
Bagni informally and stanze da bagno correctly are Italian equivalents of the English word "bathrooms." The respective pronunciations in Italian will be "BA-nyee" for "bathrooms, baths" and "STAN-tsa da BA-nyo" for "rooms for the bath."
Il in Italian means "the" in English.
"She's taking a bath. After that, she puts perfume on" in English is Lei sta facendo un bagno prima di mettersi il profumo in Italian.
Il mio bagno is an Italian equivalent of the English phrase "my bathroom." The masculine singular phrase models a difference between the two languages whereby Italian employs the masculine singular definite article il where English does not use "the." The pronunciation will be "eel MEE-o BA-nyo" in Italian.
Il messaggio in Italian is "the message" in English.
Il placet in Italian means "the permit" in English.
Il Cenacolo in Italian is "The Last Supper" in English.
Il pescecane in Italian means "the dogfish" in English.
Il piede in Italian means "the foot" in English.