What is "backbreakingly"

Usage examples of "backbreakingly".

The boxes were backbreakingly heavy, one hundred rounds of M-60 ammunition weighs seven pounds, and awkward to maneuver into some of the manjack positions, but once in place they gave every team three times the throw weight of fire they could otherwise expect.

Being a wine merchant, I often thought, was not a gentle artistic occupation, but thoroughly backbreakingly physical.

I became aware of the sound of my breath, whistling and humming crazily into the stone: the cliff was steepening, and I was laboring backbreakingly for every inch.

I say the King, and you, and me, are none of us better than the others, and it's not right that some eat off silver and never work a day in their lives, while others just as good work backbreakingly hard every day and hardly taste real meat once in a week!

The work to come would be backbreakingly hard, leaving Joachim little time for prayer and contemplation, probably for years to come.

That was the most she could do to try to get away from it, wedge herself distortedly into the shallow indentation of a low stone bench, arched backbreakingly at the waist around its seat.