元となった辞書の項目
fathom
noun
(chiefly
nautical,
historical)
Originally,
the
distance
between
an
adult
man's
arms
stretched
out
away
from
the
sides
of
his
torso
so
that
they
make
a
straight
line
perpendicular
to
his
body,
measured
from
the
tips
of
the
longest
fingers
of
each
hand,
generally
reckoned
to
be
six
feet
(about
1.8
metres);
subsequently
used
as
a
unit
for
water
depth
but
now
generally
replaced
by
the
metre.
意味（1）
(chiefly
nautical,
historical)
Originally,
the
distance
between
an
adult
man's
arms
stretched
out
away
from
the
sides
of
his
torso
so
that
they
make
a
straight
line
perpendicular
to
his
body,
measured
from
the
tips
of
the
longest
fingers
of
each
hand,
generally
reckoned
to
be
six
feet
(about
1.8
metres);
subsequently
used
as
a
unit
for
water
depth
but
now
generally
replaced
by
the
metre.
意味（4）
意味（6）
