'higher-up' definitions:

Definition of 'higher-up'

From: WordNet
noun
One of greater rank or station or quality [syn: superior, higher-up, superordinate] [ant: inferior]

Definition of 'higher-up'

From: GCIDE
  • higher-up \high"er-up"\, n. A superior officer or official; a person having greater rank or station or quality than others; -- used chiefly in pl. [Slang]
  • Syn: superior, superordinate. [Webster 1913 Suppl. + WordNet 1.5]