Hoover Up Meaning

(figuratively) To avidly absorb something as if by a vacuum cleaner.

Example:   Don't worry about the mess on the carpet - I'll hoover it up later.
2012, The Economist, 20th Oct 2012 The rise of the yuan: Turning from green to red
  [...] a deputy governor of China’s central bank pointed out that China no longer hoovers up dollar reserves with its past abandon.