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master
noun
a
person
who
is
extremely
skilled
or
highly
respected
as
an
expert
in
a
particular
activity
,
craft
,
or
subject
•
After
years
of
practice
,
she
became
a
master
of
the
violin
.
After
years
of
practice
,
she
became
a
master
of
the
violin
.
•
The
chef
was
known
as
the
master
of
French
pastries
in
the
city
.
The
chef
was
known
as
the
master
of
French
pastries
in
the
city
.
From
Old
English
mægester
via
Latin
magister
meaning
‘
teacher
’
or
‘
chief
’.
noun
a
man
who
has
control
or
authority
over
people
,
animals
,
or
things
•
The
dog
waited
patiently
for
its
master
to
return
home
.
The
dog
waited
patiently
for
its
master
to
return
home
.
•
Sailors
followed
every
command
from
the
ship
’
s
master
.
Sailors
followed
every
command
from
the
ship
’
s
master
.
Same
root
as
sense
1
,
expanding
to
meanings
of
authority
during
Middle
English
.
verb
-
master
,
mastering
,
masters
,
mastered
to
learn
,
understand
,
or
control
something
so
completely
that
you
can
use
it
very
well
•
It
took
her
months
to
master
the
new
software
.
It
took
her
months
to
master
the
new
software
.
•
He
finally
mastered
the
art
of
baking
sourdough
bread
.
He
finally
mastered
the
art
of
baking
sourdough
bread
.
Verb
sense
emerged
from
the
noun
,
meaning
‘
become
master
of
’
from
Middle
English
.
noun
the
original
version
of
a
recording
,
document
,
or
file
from
which
all
copies
are
made
•
Engineers
carefully
stored
the
studio
master
to
keep
the
sound
quality
perfect
.
Engineers
carefully
stored
the
studio
master
to
keep
the
sound
quality
perfect
.
•
Always
back
up
the
project
’
s
master
file
before
making
major
edits
.
Always
back
up
the
project
’
s
master
file
before
making
major
edits
.
Technological
sense
arose
in
the
20th
century
from
‘
master
copy
’,
the
model
for
duplication
.
