whistle up
Advanced (C1)informal
To get something or someone to appear very quickly, as if by magic.
"The general whistled up reinforcements within the hour."
Hear it in context

Dungeons & Dragons: Animated Series | Episodes 18 - 19 | Full Episodes
Dungeons & Dragons · 9:01
Whistle up a 747?

Ducks vs. Golden Knights | NHL Playoff Highlights | Game 1 | May 4, 2026
NHL · 3:54
Now the whistle up to it as well.