|Easton's Bible Dictionary|
(written Cos in the R.V.), a small island, one of the Sporades in the Aegean Sea, in the north-west of Rhodes, off the coast of Caria. Paul on his return from his third missionary journey, passed the night here after sailing from Miletus (Acts 21:1). It is now called Stanchio.
Int. Standard Bible Encyclopedia
Coos (1 Occurrence)
Acts 21:1 And it came to pass, that after we were gotten from them, and had launched, we came with a straight course unto Coos, and the day following unto Rhodes, and from thence unto Patara: (KJV WBS YLT)