To flow in the wrong or backward direction.
The flow of a fluid (through a pipe etc.) in a direction opposite to that which is normal or intended.
Of a quantity, to become smaller.
To make (a quantity) smaller.
A reduction in the number of stitches, usually accomplished by suspending the stitch to be decreased from another existing stitch or by knitting it together with another stitch. See Decrease (knitting).
An amount by which a quantity is decreased.