Definition of Hello

Interjection: hello he'low

Used as a greeting
- aloha [US], g'day [Austral], greetings, hi, hiya, hallo, hey, howdy, howzit [S.Africa], gidday [NZ], yo, wotcha [Brit], wotcher [Brit]
A call for response if it is not clear whether anyone is present or listening
Used sarcastically to imply that something is foolish or unrealistic

Noun: hello he'low

An expression of greeting
"every morning they exchanged polite hellos";
- hullo, hi, howdy, how-do-you-do, hallo