To cast on is to make the first row of loops on a knitting needle. Cast on forty stitches.
There are a dozen ways to cast on, and the one you pick decides how the edge behaves. Casting too tightly is the commonest first mistake, and the whole piece pulls in.
1phrasecast onTo make the first row of loops on a knitting needle.
“She had to cast on three times before the count was right.”
cast on is an action.
Practised in Knitting & Sewing