{adv. phr.} Until you are almost dead; near to dying. * /The bear clawed the hunter within an inch of his life./ Often used after "to". * /The prize fighter was beaten to within an inch of his life./
WITHIN AN INCH OF ONE'S LIFE
Meaning of WITHIN AN INCH OF ONE'S LIFE in English
Dictionary of English idioms . Словарь английских идиом. 2012