Corban

a Hebrew word adopted into the Greek of the New Testament and
left untranslated. It occurs only once (Mark 7:11). It means a
gift or offering consecrated to God. Anything over which this
word was once pronounced was irrevocably dedicated to the
temple. Land, however, so dedicated might be redeemed before the
year of jubilee (Lev. 27:16-24). Our Lord condemns the Pharisees
for their false doctrine, inasmuch as by their traditions they
had destroyed the commandment which requires children to honour
their father and mother, teaching them to find excuse from
helping their parents by the device of pronouncing "Corban" over
their goods, thus reserving them to their own selfish use.