whaling /ˈweɪlɪŋ/noun 4verb 1forms 1 noun4 •The practice of hunting whales. •A form of highly personalized cyberattack that targets a senior business executive.Whaling attacks typically take specific responsibilities of these executive roles into consideration, using focused messaging to trick the victim. — 2017 •The practice of spotting whales. •(informal) A beating. verb1 •(informal) physically beating. formswhalings