This is the 18126th most frequent Russian word.
хохолка
"Хохолка" means "crest" or "tuft," typically referring to a bird's feathered crest.
Here, 'хохолка' refers to the crest of feathers on the bird's head, demonstrating its zoological meaning.
На голове птицы виднелась красивая хохолка.
A beautiful crest was visible on the bird's head.
In this context, 'хохолку' is used to describe the upper part, or the 'crest,' of the pillow, showing its metaphorical or everyday object usage.
Я положила карандаш на хохолку подушки.
I placed the pencil on the top of the pillow.
Here, 'хохолку' refers to the portion of hair styled into a crest, showing its application to human hairstyles.