succor

noun
  1. 1

    Aid, assistance, or relief given to one in distress; ministration.

  2. 2

    Aid or assistance in the form of military equipment and soldiers, especially reinforcements sent to support military action.

  3. 3

    (obsolete except dialectal) Protection, refuge, shelter; a place providing such protection, refuge or shelter.

verb
  1. 1

    To give aid, assistance, or help.

  2. 2

    To provide aid or assistance in the form of military equipment and soldiers; in particular, for helping a place under siege.

  3. 3

    (obsolete except dialectal) To protect, to shelter; to provide a refuge.

Source: https://en.wiktionary.org/wiki/succor, https://en.wiktionary.org/wiki/succour