From Longman Dictionary of Contemporary Englisha ... and a halfa ... and a halfinformalGOOD/EXCELLENT used when you think that something is very unusual or surprising, or very good That was a meal and a half! → half
Examples from the Corpus
a ... and a half• Raymo led him a block and a half south.• Federal employees were again told to stay at home after the city was buried under a foot and a half of snow.• The firehouse is about a mile and a half away from my house.• In the previous half-century it could not have been more than a million and a half in all.• Jones is in a Merseyside clinic after losing a stone and a half in weight over the last seven days.• This phase was to last a year and a half and it was a period of general ineffectuality.• He has been engaged to another girl for over a year and a half. 