blend wall
n.— «Two members of Growth Energy said shipping and cost constraints could discourage further blending of ethanol with gasoline as soon as 2009, a situation the ethanol industry calls hitting the “blend wall.”» —“Ethanol makers push U.S. to boost fuel blend rate” by Charles Abbott Reuters Nov. 11, 2008. (source: Double-Tongued Dictionary)
Further reading
She sells seashells by the seashore. Who is the she in this tongue twister? Some claim it’s the young Mary Anning, who went on to become a famous 19th-century British paleontologist. Dubious perhaps, but the story of her rise from seaside...
The word nurdle, sometimes spelled nerdle, can be used to denote various “small bits of things,” such as styrofoam packing material or detritus in one’s pockets. It may be related to the word nodule. Like thingamabob and whatsit...