Manslayer

Easton's Bible Dictionary (1897)

One who was guilty of accidental homicide, and was entitled to flee to a city of refuge (Num. 35:6, 12, 22, 23), his compulsory residence in which terminated with the death of the high priest. (See CITY OF REFUGE.)

Smith's Bible Dictionary (1863)

one who kills another unintentionally, and is thus distinguished from a murderer, who kills with malice aforethought. The cases of manslaughter mentioned in Scripture appear to be a sufficient indication of the intention of the lawgiver.

Public domain dictionaries.