crystal
noun
ˈkrɪstl
noun
1
very
high
quality
clear
glass
水晶玻璃
U
a
set
of
six
crystal
glasses
六件套水晶玻璃杯
2
a
small
regular-shaped
piece
of
a
substance,
formed
naturally
when
this
substance
becomes
solid
结晶（体）
C
ice
crystals
冰晶
copper
sulphate
crystals
硫酸铜结晶
3
rock
that
is
clear,
or
a
piece
of
this
水晶
C,U
4
the
clear
cover
on
a
clock
or
watch
[美] 〔钟面或表面的〕透明盖片
C | AmE