វគ្គជំនាញកុំព្យូទ័រ
ចំណេះដឹងទូទៅ
ម្ហូបអាហារ
កំប្លែង
ទស្សន៍ទាយ
តូច
មធ្យម
ធំ
reefs
is a form of:
Reef
noun
1.
(a
ridge
of
rock
coral
or
sand
, at or
just
below
, the
surface
of the
water
)
ថ្មប៉ប្រះទឹក
ឃ្លាដែលទាក់ទង
reef down
-
បិទក្ដោង
ENGLISH MEANING
noun
1.
A
chain
or
range
of
rocks
lying
at or
near
the
surface
of the
water
.
2.
A
large
vein
of
auriferous
quartz
; -- so
called
in
Australia
.
Hence
,
any
body
of
rock
yielding
valuable
ore
.
verb
1.
(TRANSITIVE)
That
part
of a
sail
which
is
taken
in or
let
out
by
means
of the reef
points
, in
order
to
adapt
the
size
of the
sail
to the
force
of the
wind
.
2.
(TRANSITIVE)
To
reduce
the
extent
of (as a
sail
) by
roiling
or
folding
a
certain
portion
of it and
making
it
fast
to the
yard
or
spar
.