Probably from klao (through the idea of using bits of wood, etc., for the purpose; a die (for drawing chances); by implication, a portion (as if so secured); by extension, an acquisition (especially a patrimony, figuratively) -- heritage, inheritance, lot, part.
see GREEK klao
κλῆρον (klēron) − 5 Occurrences
κλῆρος (klēros) − 2 Occurrences
κλήρου (klērou) − 1 Occurrence
κλήρους (klērous) − 2 Occurrences
κλήρων (klērōn) − 1 Occurrence