Definition from Wiktionary, the free dictionary
- A form of bomb that is designed to detonate at a certain depth underwater for the purposes of attacking a submerged enemy, especially a submarine.
2014 October 25, Jeff Gordinier, “In search of the perfect taco”, T: The New York Times Style Magazine (international edition), page 100:
- The trailblazing Oaxacan chef Alejandro Ruiz […] has spiked this black-bean sauce with a hidden depth charge of flavor: patches of foliage from a local avocado tree. The leaves electrify the sauce with an unexpected thrum of black licorice.