call common, defile, pollute, unclean

Boyd’s Bible Dictionary:

A word which, with clean, was applied to personal and ceremonial conditions, as well as to the edibility of animals
The division of animals into clean and unclean existed before the Flood (Gen. 7:2). Uncleanness and the processes of purification are particularly described (Lev. 11-15; Num. 19). Unclean animals are specially mentioned (Lev. 11:9-31; Deut. 14:3-20).

Concise Bible Dictionary:

See ANIMALS

Strong’s Dictionary of Greek Words:

Greek:
κοινόω
Transliteration:
koinoo
Phonic:
koy-no’-o
Meaning:
from 2839; to make (or consider) profane (ceremonially)
KJV Usage:
call common, defile, pollute, unclean