Hypertext Webster Gateway: "springboard"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Springboard \Spring"board`\, 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.
From WordNet (r) 1.7 (wn)
springboard
n : a flexible board for jumping upward
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