Felt-tip or quill (3)
I believe the answer is:
pen
I believe this clue is a double definition.
'felt-tip' is the first definition.
(I've seen this in another clue)
'quill' is the second definition.
(I've seen this in another clue)
(Other definitions for pen that I've seen before include "Enclosure; a swan" , "International Association of poets, playwrights etc" , "Writing instrument" , "Female swan" , "Writing implement" .)