Out Of Pocket Meaning

(idiomatic) Of a person, not available; unable to be reached.

Example:   After three races he was £10 out of pocket.
2006, Lauren Dane, Sudden Desire, page 20:
Like a coward, he called his agent's work number and left a voicemail that he'd be out of pocket for several days but would try to check his messages here and there.
2011, Boyd Morrison, The Catalyst, chapter 4.
Sir, Senders is still in Yosemite camping with his family. He'll be out of pocket until tomorrow night.
2012, Vicki Hinze, Acts of Honor, page 196:
I'm going to be out of pocket for a while. Doing some...training.