Where does “dalphin” come from?

dalphin (Old French) comes from Latin delphīnus, from Ancient Greek δελφίν, from Ancient Greek δελφύς, from Proto-Indo-European gʷelbʰ- — the womb.

Ancestry of “dalphin”, step by step

Step	Language	Word	Meaning
1	Latin	delphīnus	—
2	Ancient Greek	δελφίν	—
3	Ancient Greek	δελφύς	the womb
4	Proto-Indo-European	gʷelbʰ-	the womb

dalphin — Etymology, Origin & Word History | Etymology Explorer