Sentence:  ...he found preparing the hook far less fun than dangling the <WSD>line</WSD> in the water and waiting for a fish to come along. Finally succeeding, he beamed a smile up at his father, then lowered his <WSD>line</WSD> into the swift-moving Sippora. 
Meaning of the word marked with <WSD> tags:  A rope, cord, string, or thread, of any thickness.