Kick the bucket
Drop off your twig
Euphemisms for dying in the UK
To be out of pocket means that you have paid out for something but got no return e;g if someone has asked you for a loan, you have given it but not been paid back, you are out of pocket, because your money has not been replaced.
Yup. Thole to rhyme with hole. According to Merriam Webster it's derived from Old English tholian and is very old but now only used in 'the corners of England's northern dialects' but it's still in use in Scotland and Ulster.
My Dad was a Scot and used this term. It is used in Robert Burns's poem"The Cottar's Saturday Night" the peom refers to the cottar (cottager) having to thole the factors "snash" ie. put up with the rudeness of the landlord's agent