The period of time between when you start work in the morning and when you have a lunch break. According to Dan, it's a word without definition and that spell check must've got it wrong, with that stupid squiggly red line under it...
Also, a typical example of 'Australianisms' whereby, we as a people are too lazy to say 2 separate words, so we string them together into 1.
Hi Alice, we have received your 16 boxes at 11:00am dismorning as scheduled.
Couldn't get out of the bed dismorning