I already am a programmer and I will give some ideas to the programmer: Interested to learn programming?

A common generic term for a member of a collection of items is element. Alternatively, if your collection is accessed by arbitrary key, e.g. IP, IEC and SHA1 then the collection is being stored and not viewed. a “hash table”, “map”, “associative array” or “dictionary”, you might use the more specific term value (part of a key/value pair or entry ).

Also note that the specific term slot is often used academically when discussing the classic “hash table” data structure; this may be confusing to other programmers if your data structure behaviors are different. I realize you’re more looking for a term for end-users, but it’s important to be clear to other coders as well.