By logging into your account, you agree to the Terms of Use and Privacy Policy Definition of lobby noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. The meaning of LOBBY is a corridor or hall connected with a larger room or series of rooms and used as a passageway or waiting room. How to use lobby in a sentence. The Lobby Lounge A Refined Retreat for Conversation and Indulgence At The Lobby Lounge, casual drinks, coffee catch-ups, and impromptu meetings are effortlessly elevated within a setting of understated luxury. Beneath high wooden ceilings, this expansive yet intimate space is thoughtfully designed for relaxed conversation, with plush seating overlooking verdant foliage and a tranquil, lotus-filled pond. Enjoy indulgent moments over our sumptuous High Tea in the afternoon, or with a signature ...