Where does “selk” come from?

selk (Middle English) comes from Old English seolc, from Latin sēricum, from English serigraph, from Latin sericum, from Latin sericus, from Latin -icus, from Ancient Greek -ικός, from Ancient Greek -κός — -y, -ic.

Ancestry of “selk”, step by step

selk traces back through 3 separate lines of ancestry.

via Old English seolc

Step	Language	Word	Meaning
1	Old English	seolc	silk
2	Latin	sēricum	Chinese goods, but especially silk
3	English	serigraph	a silkscreen print made by serigraphy; an...
4	Latin	sericum	Chinese goods, but especially silk
5	Latin	sericus	Of or pertaining to the Seres or the Chinese;...
6	Latin	-icus	belonging to; derived from; of or pertaining to;...
7	Ancient Greek	-ικός	of or pertaining to, in the manner of; -ic
8	Ancient Greek	-κός	forms adjectives with the sense of 'of or...
9	Proto-Indo-European	-ḱos	-y, -ic

via Old English sioloc

Step	Language	Word	Meaning
1	Old English	sioloc	—

via Old English seoloc

Step	Language	Word	Meaning
1	Old English	seoloc	—

Every word from Proto-Indo-European -ḱos →Every word from Ancient Greek -ικός →Every word from Latin -icus →