English abbreviation · Crochet
What does ch-sp mean in crochet?
ch-sp means chain space — the gap under a chain.
In French: arceau — l’espace sous une chaînette de mailles en l’air
Try it with a row from your pattern
Here is a row that uses it. Replace it with a row from your pattern: every abbreviation the reader knows is underlined, and its meaning shows on hover.
Rnd 3: sl st into ch-sp, ch 3, 2 dc in same ch-sp, *3 dc in next ch-sp; rep from * around.