Ahoy/əˈhɔɪ/ Definition 1 of 1Pro Tip 1/3Nautical Origin Originates from maritime communication; used by sailors for calling out. Ahoy! Can you see the lighthouse? Pro Tip 2/3Greeting Call Serves as a greeting or a call, similar to 'hello' but with more flair. Ahoy there, Captain! Pro Tip 3/3Attention Grabber Use to loudly catch someone's attention, especially over noise or distance. Ahoy, crew! Secure the sails!