start·ing block (stärtĭng)
n.
► Sports.
■ An apparatus that braces a runner's feet at the start of a race, consisting of two angled supports adjustably mounted on a rigid frame that is usually anchored to the track.
■ One of the raised platforms mounted at one end of a pool from which swimmers begin a race.
► The beginning of a period of time or an endeavor.

[TahlilGaran] American Dictionary ▲