Be*saiel", Be*saile", Be*sayle" (), n. [OF. beseel, F. bisaieul, fr. L. bis twice + LL. avolus, dim. of L. avus grandfather.]
1.
A great-grandfather.
[Obs.]
2. Law
A kind of writ which formerly lay where a great-grandfather died seized of lands in fee simple, and on the day of his death a stranger abated or entered and kept the heir out. This is now abolished.
Blackstone.
© Webster 1913.