hub dot
n.— «The inside of this insert contained the actual Blu-ray disk. The disk was attached to the cardboard with a so-called “hub dot,” a small foam button used to fasten CDs and DVDs to all kinds of surfaces.» —“Helvetica Blu-Ray” Lovely Package Feb. 26, 2009. (source: Double-Tongued Dictionary)
Further reading
Ping, as in ping me, meaning “contact me,” comes from the onomatopoeic ping we get from technology such as sonar. This is part of a complete episode.
Related
juicy noun. A person who illicitly carries alcohol in a water bottle. «Gwen Alexander, who’s been working at the Astoria pool for two years, confirms there haven’t been any issues with fighting this year but she said rule enforcement is...