The Eskimo bowline is a knot

Knot

A knot is a method of fastening or securing linear material such as rope by tying or interweaving. It may consist of a length of one or several segments of rope, string, webbing, twine, strap, or even chain interwoven such that the line can bind to itself or to some other object—the "load"...

 that places a loop in the end of a rope. Whereas the standard bowline

Bowline

The bowline is an ancient and simple knot used to form a fixed loop at the end of a rope. It has the virtues of being both easy to tie and untie. The bowline is sometimes referred as King of the knots because of its importance...

 knot loops the working end around the standing part, the Eskimo

Eskimo

Eskimos or Inuit–Yupik peoples are indigenous peoples who have traditionally inhabited the circumpolar region from eastern Siberia , across Alaska , Canada, and Greenland....

bowline loops it around its own descending part.

The eskimo bowline is best used in applications in which the loop will be stretched wide. In applications where the two legs of the loop are nearly parallel, a bowline is superior.

The picture below is based on the method described by Geoffrey Budworth in The Illustrated Encyclopedia of Knots. The tightened knot on the right takes on a trefoil crown shape.