land received by fee tail
"The ancient deed specified that any heir who inherited the estate would be bound to keep it within the family line, effectively entailing the land so it could never be sold."
the act of entailing property; the creation of a fee tail from a fee simple
"The judge explained that the grandfather's will did not entail the family estate, allowing his daughter to sell it freely."
That which is entailed. Hence:
"The old estate was entailed to his eldest son, meaning no other family members could ever inherit it."
An estate in fee entailed, or limited in descent to a particular class of issue.
"The old aristocrat refused to sell his land because it was an estate in fee entailed that could only pass down to his direct male heirs."
To imply or require.
"The new safety regulations will entail installing additional fire alarms in every building."