niche
n
1 shallow recess, esp in a wall (浅的)凹处; (尤指)壁龛
a niche with a shelf 有格架的壁龛. =>illus 见插图.
2 (fig 比喻) suitable or comfortable position, place, job, etc 适合的或舒适的位置、 地方、 职业等
I don´t think he´s yet found his niche in life, ie the occupation that gives him most satisfaction and happiness. 我认为他还没找到生活的归宿.