Fossi in Italian means "(if) I were" or "you were" in English. It is the first and second person singular imperfect subjunctive (congiuntivo imperfetto) of the verb "to be" (essere). Examples include:
L'ultima volta che tu fossi qui
When translated from English to Italian a raccoon is a procione
"Out" in English is fuori in Italian.
"About" in English is circa in Italian.
"Or" in English is o in Italian.
"Not italian" in English is non italiano in Italian.
"I wish you were here with me" is an English equivalent of the Italian phrase Vorrei che tu fossi qui con me. The first person singular present conditional, conjunction, second person informal singular pronoun and imperfect subjunctive, adverb, preposition, and first person singular emphatic pronoun translate literally into English as "I would like that you were here with me." The pronunciation will be "vor-REH-ee key too FOS-see kwee kon mey" in Italian.
"To have" in English means avere in Italian.
"Who we are" in English is Chi siamo in Italian.
"And you?" in English is E tu? in Italian.
"About me!" in English is Su di me! in Italian.
Questa in Italian is "this" in English.