Noah Webster
Hereditament
HEREDIT'AMENT, noun [Latin haeres, haeredium. See Heir.]
Any species of property that may be inherited; lands, tenements, any thing corporeal or incorporeal, real, personal or mixed, that may descend to an heir.
A corporeal hereditament is visible and tangible; an incorporeal hereditament is an ideal right, existing in contemplation of law, issuing out of substantial corporeal property.