Noun
A
vertical
tube
or
hollow
column
used
to
emit
environmentally
polluting
gaseous
and
solid
matter
(
including
but
not
limited
to
by-products
of
burning
carbon-
or
hydrocarbon-based
fuels
);
a
flue
.
Verb
To
negotiate
a
chimney
(
narrow
vertical
cave
passage
)
by
pushing
against
the
sides
with
back
,
feet
,
hands
,
etc
.