What does the word adjustable mean?

Usage examples for adjustable

  1. " I suppose not; unless, perhaps, some one might invent an adjustable glass eye. – The Mystery of 31 New Inn by R. Austin Freeman
  2. An adjustable arm- chair, infirm and cynical, displayed itself by the window. – A Mummer's Tale by Anatole France
  3. Not only were the ports and the gangways all open, but Cosmo ordered the temporary removal of rows of adjustable plates on the sides of the vessel, which transformed the broad outer gangways, running its whole length, into delightful promenade decks. – The Second Deluge by Garrett P. Serviss