The person who asks what a word means is making the conversation more available to everyone.

In most rooms several people are unsure of the same term, and each of them believes they are the only one. Whoever asks does not merely get their own answer, they change what the discussion assumes, and everyone else quietly benefits. Asking costs something, which is why it tends to be done by the person with the most security in the room rather than the least. It is a service, though it rarely looks like one.

If you have some standing where you work, spend it on the basic question. And when somebody else asks, answering without a flicker of surprise is what keeps the next question possible.