Sentence:  In American Sign Language (ASL), for instance, the <WSD>sign</WSD> for 'catch' is formed with one hand (in the role of agent) moving across the body (an action) to grasp the forefinger of the other hand (the patient). 
Meaning of the word marked with <WSD> tags:  A specific gesture or motion used to communicate by those with speaking or hearing difficulties; now specifically, a linguistic unit in sign language equivalent to word in spoken languages.