Noun
A
tall
,
slim
post
or
tower
,
usually
tapering
upward
,
used
to
support
,
for
example
,
sails
or
observation
platforms
on
a
ship
,
the
main
rotor
of
a
helicopter
,
flags
,
floodlights
,
meteorological
instruments
,
or
communications
equipment
,
such
as
an
aerial
,
usually
supported
by
guy-wires
(
except
in
the
case
of
a
helicopter
).
Verb
To
supply
and
fit
a
mast
to
(
a
ship
).
Adverb
most