Definition of "crucifier"

Oh, this render of hearts, this murderer of love, this perpetual crucifier of Christ, […]

1844, The Christian, volume 1, page 498

I mind him well as he sat in his chair or daundered through Caulds, a kind word for every one and sage counsel in time of distress, but withal a severe man to himself and a crucifier of the body.

1902, John Buchan, The Outgoing of the Tide