Sentence:  Guo and Wu took a big lead after the second dive, a back dive in <WSD>pike</WSD> position, which the judges awarded three perfect tens for synchronization. 
Meaning of the word marked with <WSD> tags:  A position with the knees straight and a tight bend at the hips with the torso folded over the legs, usually part of a jack-knife. (from 1920s)