Hardship
Troubles
noun, verbal noun, な adjective
くろう
苦労 （くろう） Hardship, Troubles
困難 （こんなん） Hardship, Difficulty, Hard, Difficult
玄人 （くろうと） Expert, Professional, Specialist, Woman Of The Red Light District
The path to becoming an Expert 玄人 くろうと is full of Hardships 苦労 くろう
A crow くろう is a sign of Hardship.
He endured many Hardships while sitting on the Klo くろう (toilet in German).