(US, qualifier:street slang, slang, uncommon) The police.
(dated, possibly) A minced oath for Lord.
Laws bless my soul, my dear little lamb! what's the matter? 1896, Harriet Beecher Stowe, The Writings of Harriet Beecher Stowe: With Biographical Introductions, Portraits, and Other Illustrations, page 81:
Laws, bless us, who'd have thought it! 1841, John Frail, The Lost Letter, Or, The Confessions of Conscience: A Dramatic Sketch, page 27: