Helloo is a slang term used to greet someone in a playful and flirtatious manner. It is often used as a way to get someone's attention, particularly in a romantic or sexual context., The meaning of HELLO is an expression or gesture of greeting —used interjectionally in greeting, in answering the telephone, or to express surprise. How to use hello in a sentence., The meaning of hello. Definition of hello. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels., hello, hallo, hullo /hɛˈləʊ; hə-; ˈhɛləʊ/ sentence substitute an expression of greeting used on meeting a person or at the start of a telephone call a call used to attract attention an expression of surprise an expression used to indicate that the speaker thinks his or her listener is naive or slow to realize something: Hello? Have you been on Mars for the past two weeks or something , 5 senses: 1. an expression of greeting used on meeting a person or at the start of a telephone call 2. a call used to attract. Click for more definitions., Say hello to Helloo – a platform for scalable social learning. All done in a brain-friendly way that creates the change that the organisation needs in order to unlock real upskilling, progress and growth..