The act or state of corrugating or of being corrugated, a wrinkle; fold; furrow; ridge.
Source Anna Litvinuk
A background formed from an image of an old tile on the New York Metropolitan Museum of Art website. To get the base tile, select the rectangle in Inkscape and use shift-alt-i.
Source Firkin
This was formed by distorting an image of a background on Pixabay.
Source Firkin
A seamless texture traced from an image on opengameart.org shared by Scouser.
Source Firkin
A slightly more textured pattern, medium gray. A bit like a potato sack?
Source Bilal Ketab
Prismatic Curved Diamond Pattern 2 No Background
Source GDJ
Honestly, who does not like a little pipe and mustache?
Source Luca Errico
Prismatic Groovy Concentric Background 2 No Black
Source GDJ
ZeroCC tileable stone texture, edited from pixabay. CC0
Source Sojan Janso
Inspired by the B&O Play, I had to make this pattern.
Source Atle Mo
One more sharp little tile for you. Subtle circles this time.
Source Blunia
Zerro CC tillable texture of stones photographed and made by me. CC0
Source Sojan Janso
Light gray grunge wall with a nice texture overlay.
Source Adam Anlauf
Remix from a drawing in 'Ostatnie chwile powstania styczniowego', Zygmunt Sulima, 1887.
Source Firkin
Old China with a modern twist, take two.
Source Adam Charlts
From a drawing in 'Picturesque New Guinea', J Lindt, 1887.
Source Firkin
This one is amazing, truly original. Go use it!
Source Viahorizon