Meaning of Hello
Unknown / অজানা / अज्ञात
(used to express a greeting, answer a telephone, or attract attention.)
(an exclamation of surprise, wonder, elation, etc.)
(used derisively to question the comprehension, intelligence, or common sense of the person being addressed): You're gonna go out with him? Hello!
the call “hello” (used as an expression of greeting): She gave me a warm hello.
to say “hello”; to cry or shout: I helloed, but no one answered.