How about this one:
Definition of NICHE
1
a : a recess in a wall especially for a statue
b : something (as a sheltered or private space) that resembles a recess in a wall
2
a : a place, employment, status, or activity for which a person or thing is best fitted <finally found her niche>
b : a habitat supplying the factors necessary for the existence of an organism or species
c : the ecological role of an organism in a community especially in regard to food consumption
d : a specialized market
Even better!