Definition of jack up in English:

jack up

  • informal Inject oneself with a narcotic drug.
    More example sentences
    • Eric was just tired and still a little jacked up on drugs, then they did some therapy and he got even more tired.
    • He was still pretty much jacked up on drugs, and the rest of the team had practically left.
    • And how else are you going stop a 350 pound guy, all jacked up on drugs?
See parent entry: jack

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Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
elaborate ornamentation of a vocal melody