killer app
an application that surpasses its competitors.
Origin of killer app
11985–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use killer app in a sentence
The killer app, code-named Orca, transmogrified into a beached whale on election day.
For Wii U owners, that killer app will be the next part of the Super Smash Bros. series, which promises to be completely amazing.
It's telephony's biggest "killer app" since Skype or even voice-over-IP.
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