'Explorer' definitions:

Definition of 'explorer'

From: WordNet
noun
Someone who travels into little known regions (especially for some scientific purpose) [syn: explorer, adventurer]
noun
A commercial browser [syn: Internet Explorer, Explorer, IE]

Definition of 'Explorer'

From: GCIDE
  • Explorer \Ex*plor"er\, n. One who explores; also, an apparatus with which one explores, as a diving bell. [1913 Webster]