Ser"geant*y (?), n. [Cf. OF.
sergentie, LL. sergentia. See Sergeant.] (Eng.
Law) Tenure of lands of the crown by an honorary kind of
service not due to any lord, but to the king only. [Written also
serjeanty.]
Grand sergeanty, a particular kind of tenure
by which the tenant was bound to do some special honorary service to
the king in person, as to carry his banner, his sword, or the
like. Tomlins. Cowell. Blackstone. --
Petit sergeanty. See under
Petit.