killcow

The expression "judgements butcher," like Nashe's "killcow," indicates Shakespeare's father's trade of butcher.

Shakespeare's Lost Years in London, 1586-1592 Arthur Acheson 1897

In the expression "killcow," Nashe alludes to Shakespeare's father's trade.

Shakespeare's Lost Years in London, 1586-1592 Arthur Acheson 1897

The phrase "ingrafted overflow of a killcow conceit" refers to Shakespeare's additions to, or revisions of, plays owned by his company that were originally written by such scholars as Greene.

Shakespeare's Lost Years in London, 1586-1592 Arthur Acheson 1897

‘pickgoose’ (“the bookworm was never but a _pickgoose_”) {162}, ‘killcow’

English Past and Present Richard Chenevix Trench 1846