Knossos hapax
Definitions
Chadwick & Ventris 1973:
1. (KN Dc, KN Dv) probably anthroponym, a collector
2. (PY Cn) perhaps an adjective, cf. περκνός 'dark', πέρκος 'a kind of hawk'
References
Chadwick, John and Michael Ventris, 1973 Documents in Mycenaean Greek