Answer :
The following lines from near the end of "The Navajo Origin Legend" contains the word "protruded" :
" While the wind was blowing, eight of the Mirage People ( mirages personified) came and walked around the objects on the ground four times, and as they walked the eagle feathers, whose tips protruded from between the buckskins, were seen to move."
The sentence talks about the tips of the eagle feathers coming or peeking out from between the buckskins. The word "protruded" thus means to cause to peek out or stick out from above a surface.