Coos

Easton's Bible Dictionary (1897)

(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.

Smith's Bible Dictionary (1863)

(Acts 21:1) [Cos, Or Coos]

Hitchcock's Bible Names Dictionary (1869)

top, summit

Public domain dictionaries.