permanentpen
nounUK /ˈpɜːmənənt pɛn/
US /ˈpɜːrmənənt pɛn/
A permanent pen is a pen whose ink cannot be erased.
Please sign the form with a permanent pen so the writing stays.
RELATED WORDS
OTHER MEANINGS
2. A pen used for writing on surfaces like CDs, plastic, or fabric where normal ink would smudge.
She used a permanent pen to write her name on the CD.
3. A marker with waterproof, fade-resistant ink for labeling items.
Label the boxes with a permanent pen before moving.
4. In computing, a pen tool setting that keeps strokes fixed and uneditable.
The drawing app's permanent pen mode locks each line in place.