Adjective
Truly
vertical
,
as
indicated
by
a
plumb line
.
Noun
A
little
mass
of
lead
,
or
the
like
,
attached
to
a
line
,
and
used
by
builders
,
etc
.,
to
indicate
a
vertical
direction
.
Verb
To
determine
the
depth
,
generally
of
a
liquid
;
to
sound
.
Adverb
In
a
vertical
direction
;
perpendicularly
.