HOW TALL [C, U] › how tall or high something or someone is: a man of average height The tower measures 27.28 metres in height. HOW FAR UP [C, U] › how far above the ground something is: The aircraft was flying at a height of about 6000 metres. TALL [U] › being tall: People always make comments about his height. the height of sth › the strongest or most important part of something: I met him when he was at the height of his fame.