What is Lough?
An alternative spelling of 'llow'. The P is silent, so the pronunciation is the same as the word 'llow'.
To not bother doing something.
"Nah, I'm (p)loughing chemistry, it hurts my head."
"Apparently we're meant to arrive at 8am."
"(P)lough that!"
See plough, llow, skive, lazy