1. Lavaliere
The kind of microphone that clips onto one's shirt near the
neck and has a power pack that clips on at the waistline.
This leaves your speaker's hands free to be more comfortably
articulate, to handle any props, and to advance PowerPoint
slides.
2. Lectern
The correct name for the furniture item that one
stands behind when introducing a speaker. Notes can be
placed on the lectern and, in some cases, a microphone is built
in. They are often commonly mistakenly called "podiums".
In reality, podium refers to the raised stage area that one
might be standing upon - whether or not a lectern is on the
podium.
3. ROI
Return On Investment - what the client hopes to get out of
the keynote. This generally refers to financially but is
also used to refer to softer gains, like a more congenial work
environment, better safety, or legal compliance.
4. One-Sheet
The brochure of choice in the speaking industry is a single
sheet expression of what the speaker does overall. They
may be single or double sided.
5. Spec(ification)
Sheet or Program Sheet
A separate page on a specific program that might be the right
fit among the speaker's offerings.
6. Proxima (LCD projector)
A device that takes a laptop's screen and projects it onto a
screen for all to see. Proxima is only one name brand of
LCD projector but, like Jell-o and Xerox, sometimes a name brand
becomes the word people tend to use for it.