(idiomatic) Without a home; without the means to afford good shelter.
We haven't been able to pay rent for five months. Next month we'll be on the street.
(idiomatic) In actual practice, as opposed to in a laboratory, classroom, etc.
Source: en.wiktionary.orgMany a man's reputation would not know his character if they met on the street. Elbert Hubbard
I believe in using words, not fists. I believe in my outrage knowing people are living in boxes on the street. I believe in honesty. I believe in a good time. I believe in good food. I believe in sex. Bertrand Russell
The mugger who is arrested is back on the street before the police officer, but the person mugged may not be back on the street for a long time, if ever. Mario Cuomo
If I weren't earning $3 million a year to dunk a basketball, most people on the street would run in the other direction if they saw me coming. Charles Barkley
A mathematical theory is not to be considered complete until you have made it so clear that you can explain it to the first man whom you meet on the street. David Hilbert
I like singing in the street, so if you saw a little Indian kid walking on the street singing loudly, that was probably me. Sanjaya Malakar