Bay ‧ watch /ˈbeɪwɒtʃ $ -wɑːtʃ, -wɔːtʃ/ BrE AmE trademark
a US television programme about a group of ↑ lifeguard s (=someone whose job is to save people who get into difficulties when they are swimming in the sea) who worked on a beach in California. The actresses and actors were all very attractive and did not wear much clothing. David Hasselhoff and Pamela Anderson used to appear in the programme. The programme was popular in the 1990s.