Double crochet

The Double Crochet stitch (abbreviated dc in the US) is one of the basic crochet stitches, and is used to create a variety of more complex crochet stitches. It is three times the height of a Single Crochet stitch, and twice the height of a Half Double Crochet stitch.

In UK terms, the dc stitch is called Treble Crochet, or tc.