1.VerbTo extend one's hand(s) forward; to reach for something.
"He reached out to catch the falling snowflake."
2.VerbTo ask for help.
"His drug overdose was just him reaching out to you."
3.VerbTo make more friends, to increase one's group of friends or acquaintances.
"Volunteering projects can be good ways to reach out."
4.VerbTo try to contact someone, especially in order to give or get information, help, support, etc.
"The telecom company's slogan, "reach out and touch someone", played on the figurativeness of both verbs; informal military usage later adopted it jocularly as a euphemism for long-range kinetic activity."