\Lop"per\, n.
One who lops or cuts off.

\Lop"per\, v. i. [imp. & p. p. {Loppered}; p. pr. & vb.
n. {Loppering}.] [Cf. Prov. G. l["u]bbern, levern, OHG.
giliber?n, G. luppe, lab, rennet.]
To turn sour and coagulate from too long standing, as milk.