اسم ( noun )
• (1) تعریف: a hard stonelike chunk left from the burning of coal.
• (2) تعریف: a hard brick used for paving.
اسم ( noun )
• (1) تعریف: (slang) any error, esp. a misplayed note in a musical performance.
• (2) تعریف: (informal) a total failure; unsatisfactory product.