Sentence:  <WSD>Athletes</WSD>' use of herbal supplements has skyrocketed in the past two decades. At the top of the list of popular herbs are echinacea and ginseng, whereas garlic, St. John's wort, soybean, ephedra and others are also surging in popularity or have been historically prevalent. 
Meaning of the word marked with <WSD> tags:  A participant in a group of sporting activities which includes track and field, road running, cross country running and racewalking.