shadder - What does it mean?

Noun

(en-noun)

*{{quote-book|year=1872|author=John Hay, et al.|title=Not Pretty, But Precious|chapter=|edition= citation

|passage=Nex' room my boy lies in the shadder an' dark. }}

*{{quote-book|year=1876|author=Mark Twain (Samuel Clemens)|title=The Adventures of Tom Sawyer, Complete|chapter=|edition= citation

|passage=We spotted the shadder to a dot." }}

*{{quote-book|year=1904|author=Marietta Holley|title=Samantha at the St. Louis Exposition|chapter=|edition= citation

|passage=And I see with joy that the shadder on my pardner's face lifted quite a little durin' our stay there, but of course this belated us and we didn't git to St. Louis till Saturday late in the afternoon. }}

*{{quote-book|year=1906|author=Henry Wallace Phillips|title=Mr. Scraggs|chapter=|edition= citation

|passage=And yet that Chink had the innocentest face in Utah; he might ha' stood for a picture of Adam before Eve cast a shadder on his manly brow. }}

*{{quote-book|year=1916|author=Francis Lynde|title=The Taming of Red Butte Western|chapter=|edition= citation

|passage="If I didn't know better, I'd swear that was Hallock again--or Hallock's shadder follerin' him at a good long range!" }}

*{{quote-book|year=1966|author=Ambrose Bierce|title=The Collected Works of Ambrose Bierce, Volume 8|chapter=|edition= citation

|passage=But ole Sim Salper is never a-goin' to fret hisself to a shadder about it. }}