>there's nothing ambiguous about "look it up on the wiki"

When someone says "look it up on the wiki" I assume they refer to a wiki specific to the topic at hand.

Which will prompt me to ask: what wiki?

> this is like asking me not to call the encyclopedia britannica "the encyclopedia" since there are many other encyclopedias in existence

If you have a physical set and it's the only encyclopedia in the house, it might be fair. I've never heard anyone generically refer to Encyclopedia Britannica as simply "the encyclopedia" outside of this circumstance.

> sure wikipedia is one wiki, but there's nothing ambiguous about "look it up on the wiki"

Hard disagree. With thousands of specialized wikis and in-house corporate wikis, it can never really be assumed to mean Wikipedia specifically, unless you're already on Wikipedia.

"but there's nothing ambiguous about "look it up on the wiki"

That is ambiguous. I would assume you were running a personal wiki project, and you meant that, or you meant the wiki at your place of work. This isn't like "flexing on the Gram" -- most people don't run a personal Instagram, so if you're flexing on the gram, as the rap lyrics say, then I can guess what you mean. But most of us use wikis at work, so we all deal with a large number of wikis, so simply saying "wiki" is ambiguous.