Definition of Jacob
Ja´cob
n.
1.
A
Hebrew
patriarch
(
son
of
Isaac
,
and
ancestor
of
the
Jews
),
who
in
a
vision
saw
a
ladder
reaching
up
to
heaven
(
Gen
.
xxviii
.
12
); -
also
called
Israel
.
And
Jacob
said
. . .
with
my
staff
I
passed
over
this
Jordan
,
and
now
I
am
become
two
bands
.
- Gen. xxxii. 9, 10.
Thy
name
shall
be
called
no
more
Jacob
,
but
Israel
.
- Gen. xxxii. 28.
Jacob's ladder
a
-
(Bot.)
A
perennial
herb
of
the
genus
Polemonium
(
Polemonium
cruleum),
having
corymbs
of
drooping
flowers
,
usually
blue
.
Gray
.
b
-
(Naut.)
A
rope
ladder
,
with
wooden
steps
,
for
going
aloft
c
-
(Naut.)
A
succession
of
short
cracks
in
a
defective
spar
.
- R. H. Dana, Jr.
Jacob's membrane
See
Retina
.
Jacob's staff
a
-
A
name
given
to
many
forms
of
staff
or
weapon
,
especially
in
the
Middle
Ages
;
a
pilgrim
'
s
staff
b
-
(Surveying)
See
under
Staff
.
- Spenser.
Related Words
biochemist
,
Francois
Jacob
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