nelikko

Etymology
From. Equivalent to.

Noun

 * 1) quartet, group of four
 * 2) quadruplet sequence of four elements
 * 3)  A unit of measure equal to ¼ tynnyri, or 41.22 liters as a dry measure, 31.41 liters as a liquid measure; roughly comparable with English firkin, which is defined as one fourth of a barrel.