Sentence:  Try being the operative word - she managed two hops before the heels got the better of her, and she overbalanced, losing her balance and landing on her hands and knees. “That's an <WSD>ooch</WSD>,” Heidi said as Natalie looked up at her. “That's a double <WSD>ooch</WSD>,” Cindy added as they watched her pull herself along the floor on her hands and taped knees, until she reached the desk. 
Meaning of the word marked with <WSD> tags:  Something that causes pain or discomfort.