noppen

From Middle High German noppen (“to form/pick nubs”). Equivalent to a denominal of Noppe (“nodule, bobble”)

noppen (weak, third-person singular present noppt, past tense noppte, past participle genoppt, auxiliary haben)^[1]

1. (textiles) to pick or pluck off pills/nubs (from a fabric)

   Sie noppt den Wollpullover, bis alle Knötchen weg sind.

   She picks the pills off the wool sweater until all the little knots are gone.

2. (textiles) to provide with nubs; to create a nubby texture

   Beim Spinnen kann man das Garn absichtlich noppen.

   When spinning you can deliberately create nubs in the yarn.

• Common in textile/jargon contexts; the participle appears attributively: genoppt (e.g., ein genoppter Stoff).

• “noppen” in Digitales Wörterbuch der deutschen Sprache
• “noppen” in Duden online