This is the 287th most frequent Japanese word.
かけ
The Japanese word "かけ" (kake) can mean "bet," "wager," "hanging," "sprinkling," "unfinished," or "partial," depending on the context.
The term かけ refers to 'halfway' or 'unfinished' in this context.
彼は宿題をやりかけたまま出かけた。
He went out leaving his homework halfway done.
In this instance, かけ refers to 'hanging' or 'covering' something.
窓にカーテンをかけました。
I hung a curtain on the window.
Here, かけ means 'pouring something over' or 'applying onto'.