KJV:
And there sat in a window a certain young man named Eutychus, being fallen into a deep sleep: and as Paul was long preaching, he sunk down with sleep, and fell down from the third loft, and was taken up dead.
NASB:
And there was a young man named Eutychus sitting on the window sill, sinking into a deep sleep; and as Paul kept on talking, he was overcome by sleep and fell down from the third floor and was picked up dead.