Sentence:  He had not gone far, when coming on towards him he beheld the portly gentleman, who had walked into his counting-house the day before, and said, "Scrooge and Marley's, I believe?"  It sent a <WSD>pang</WSD> across his heart to think how this old gentleman would look upon him when they met; but he knew what path lay straight before him, and he took it. 
Meaning of the word marked with <WSD> tags:  A sudden sharp feeling of an emotional or mental nature, as of joy or sorrow.