noun
A rope or cord for hanging laundry to dry, often outdoors.
庭に物干し綱を張って洗濯物を干した。
I hung a clothesline in the yard and dried the laundry.
洗濯ロープ is a more modern term for a laundry rope, often retractable or synthetic.
Compound of 物干し (ものほし, 'drying things') + 綱 (つな, 'rope').