hel·lo 
/həˈloʊ/ noun
plural hel·los /həˈloʊ/ noun 1 — used as a greeting ▪ Hello there! How are you? ▪ Hello, my name is Linda. 2 [count] : the act of saying the word hello to someone as a greeting
▪ We exchanged hellos. [=we said hello to each other] ▪ They welcomed us with a warm hello. 3 — used when you are answering the telephone ▪ Hello. Who's this? [=who is calling?] ▪ Hello. May I speak to Linda, please? 4 — used to get someone's attention ▪ Hello? Is anybody here? 5 — used to express surprise ▪ Well, hello! What do we have here?
▪ We exchanged hellos. [=we said hello to each other] ▪ They welcomed us with a warm hello.
