What does the word adjustable mean?

Usage examples for adjustable

  1. An adjustable arm- chair, infirm and cynical, displayed itself by the window. – A Mummer's Tale by Anatole France
  2. 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