All 5 Uses

niche
in
Dune
(Auto-generated)

The Baron shifted his gross body in the suspensors, focused his attention on an ebaline statue of a leaping boy in a niche across the room.†
Book 2 *
"The more life there is within a system, the more niches there are for life," his father said.†
Book 2
The dark niches of his eyes remained steady on Paul with their untamed stare.†
Book 3
They turned then to the necessary animal life — burrowing creatures to open the soil and aerate it: kit fox, kangaroo mouse, desert hare, sand terrapin ...and the predators to keep them in check: desert hawk, dwarf owl, eagle and desert owl; and insects to fill the niches these couldn't reach: scorpion, centipede, trapdoor spider, the biting wasp and the wormfly ...and the desert bat to keep watch on these.†
Book A1 -
A system maintains a certain fluid stability that can be destroyed by a misstep in just one niche.†
Book A1 -

Definitions:

(1) (niche as in: it is a niche product)
a special role, interest, or small market where someone or something fits especially well; or literally
(2) (niche as in: in a niche of the wall)
a small hollow space in a wall for a statue or decoration; or any shallow recess, cranny, or crevice
(3) (meaning too rare to warrant focus)
More rarely, niche can refer to a role for a species within an ecosystem.