'Portable' definitions:

Definition of 'portable'

From: WordNet
adjective
Easily or conveniently transported; "a portable television set" [ant: unportable]
adjective
Of a motor designed to be attached to the outside of a boat's hull; "a portable outboard motor"
noun
A small light typewriter; usually with a case in which it can be carried

Definition of 'Portable'

From: GCIDE
  • Portable \Port"a*ble\, a. [L. portabilis, fr. portare to carry: cf. F. portable. See Port demeanor.]
  • 1. Capable of being borne or carried; easily transported; conveyed without difficulty; as, a portable bed, desk, engine. --South. [1913 Webster]
  • 2. Possible to be endured; supportable. [Obs.] [1913 Webster]
  • How light and portable my pain seems now! --Shak. [1913 Webster]
  • Portable forge. See under Forge.
  • Portable steam engine. See under Steam engine. [1913 Webster]