An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.
Backspin
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When a DJ takes a record and quickly spins it in a backward direction using his or her hand.
Backspin meaning & definition 1 of Backspin.
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Classic breakdancing move
Backspin meaning & definition 2 of Backspin.
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Backspin in Table Tennis. A player will purposely put spin on to the ball to make it spin back as it hits the table on the other side of the net, deceiving the opposing player.
Backspin meaning & definition 3 of Backspin.
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