To place or enclose in a niche; to put something into a specific, often protective or specialized position or space.
From French 'niche' (a recess or specialized position), with the prefix 'en-' added to create a verb form meaning 'to put into a niche.' The French 'niche' originally came from Italian 'nicchia' and Latin 'nidus' (nest).
While 'enniche' is extremely rare, it perfectly demonstrates how English can create verbs from nouns using the 'en-' prefix—we do this all the time with words like 'enrich' and 'enlarge,' but most new combinations fade away unless they fill a genuine linguistic need.
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