Answer: springboards

AnswerCrossword Clue
SPRINGBOARDSGymnast's platforms
springboardsSPRINGBOARD, a flexible board usually secured at one end and used for gymnastic stunts or diving
springboardsA strong, flexible board from which someone can jump in order to gain added impetus when performing a dive or a gymnastic movement
springboardsA thing that lends impetus or assistance to a particular action, enterprise, or development