hello

interj. hi! (used in greeting); hey! (used to attract attention)

n. greeting, salutation

Hello is a salutation or greeting in the English language and is synonymous with other greetings such as or . Hello was recorded in dictionaries in 1883.
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Hello! is a weekly magazine specialising in celebrity news and gossip, published in Britain. Hello! sells editions in Britain, Ireland, UAE, Spain, Mexico, Turkey, Russia, Thailand, Greece, Canada, and starting in 2007 Serbia.
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Noun
1. an expression of greeting; "every morning they exchanged polite hellos"
(synonym) hullo, hi, howdy, how-do-you-do
(hypernym) greeting, salutation

interj. hello, hi! (used in greeting); hey! (used to attract attention)

(interj. & n.)
See Halloo.