noun

• (geomorphology) A conical mound of earth with an ice core caused by permafrost uplift, particularly if lasting more than a year.
  "The greatest variation in cover thickness, as determined from collapsed pingos, is in irregularly shaped pingos, or those with asymmetrically located ice-cores."

noun

• (Sri Lanka, dated) A flexible pole supported on one shoulder, with a load suspended from each end.
  "This done, he [an elephant] took up the pingo and moved away from the spot; but at the distance of about a fathom or two, laid it down again, and ripping open one of the bundles, took out of it all the contents, somans [footnote: Woman's robe], cambāyas [footnote: The figured cloth worn by men], handkerchiefs, and several pieces of white cambrick cloth, all which he tore to small pieces, and flung them wildly here and there. He did the same with all the other pingoes."
• (Sri Lanka, dated) A measure of weight equivalent to that which can be carried using a pingo, perhaps about 55 pounds (25 kilograms) (see the 2013 quotation).
  "Upon reaching this quantity, the tribute decreased one pingo annually until the number was reduced to five."