Strong's #2975: lagchano (pronounced lang-khan'-o)
 a prolonged form of a primary verb, which is only used as an alternate in certain tenses; to lot, i.e. determine (by implication, receive) especially by lot:--his lot be, cast lots, obtain.
Thayer's Greek Lexicon:
 ́ 
 
  lagchanō 
 
 1) to obtain by lot
 
 1a) to receive by divine allotment, obtain
 
 2) to cast lots, determine by lot
 
  Part of Speech: verb
Relation: a prolonged form of a primary verb, which is only used as an alternate in certain tenses
Usage:
This word is used 4 times:
Luke 1:9: "custom of the priest's office,  his lot was to burn incense when he went into the"
John 19:24: "rend it, but  cast lots for it, whose it shall be:"
Acts 1:17: "with us, and  had obtained part of this ministry."
2 Peter 1:1: "an apostle of Jesus Christ,  to them that have obtained like precious faith with us through"