Boss In engineering, a boss is a protruding feature on a workpiece. A common use for a boss is to locate one object within a pocket or hole of another object.
See the pictures from this search for examples like yours.
Let me elaborate for you with this update:
Here is a fairly comprehensive book on plastic part design that covers bosses and other plastic part features in great detail. It’s a searchable book, and you might find it helpful for what you are doing.
Boss is the generic name given to the protruding feature in a mechanical design. As you recognize, the function of that protuberance varies, and it can be a protruding pin or a reinforced hole (or a protruding pin with its own hole (See here).
Terms like locating pin or tab and locating hole or slot are common. Pilot holes (in a boss) accept screws or threaded inserts. I haven’t seen any authoritative mention of terms like “male boss” and “female boss”. You can search the above-mentioned book yourself for terms that are used.
Bosses aren’t limited to plastic design, and any fabricated item might have a boss. The boss might be inserted into a second part in an assembly, fastened by whatever means the designer chooses (e.g. screwing, welding).
Best Answer
When the article is tight-wrapped in that material, or with some people any material, people use the adjective "shrink-wrapped" or "shrink-wrapped in cellophane". When it's wrapped loose—and often fastened with a bow—, as with holiday presents, people usually say "in cellophane bag" or "in cellophane."
Edit: AFAIK and concerning mostly AE