灰岩

Traditional form:

灰岩

Pinyin (reading):

huīyán

Definitions:

• limestone (abbr. for 石灰岩 (shíhuīyán))
• CL:塊／块 (kuài)

Characters:

• 灰 - ashes; dust; lime, mortar
• 岩 - cliff; rocks; mountain

Traditional characters:

• 灰 - ashes; dust; lime, mortar
• 岩 - cliff; rocks; mountain