| Springboard (n.) An elastic board, secured at the ends, or at one end, often by elastic supports, used in performing feats of agility or in exercising. Thesaurus Entries Lastex, baleen, battledore, chewing gum, elastic, elastomer, gum, gum elastic, handball, jumping jack, racket, rubber, rubber ball, rubber band, spandex, spring, stretch fabric, trampoline, whalebone |