verb (used without object) Scot. and North England.
to clabber; curdle.
Origin of lapper2
1805–15; Scots form of lopper2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for lappered
Historical Examples of lappered
The floor was all covered with lappered blood, and sheep and calf skins.The Life of Mansie Wauch
David Macbeth Moir
Every time she weeps for him his coffin is filled with lappered blood.