verb (used without object), verb (used with object), knapped, knap·ping. Chiefly British Dialect.
to strike smartly; rap.
to chip or become chipped, as a flint or stone.
to bite suddenly or quickly.
Origin: Related forms
1425–75; late Middle English; cognate with Dutch knap (noun), knappen (v.) crack; orig. imitative
is always a great word to know.
So is slumgullion. Does it mean: