Precum, Cowper's fluid, pre-ejaculate.
"We decided to go to a preparty at the bar before heading to the main event later that night."
A preparty.
"The pre at the store handed me my receipt and asked for my ID."
Usage: Use "pre" as a noun only in informal contexts to refer to a gathering that happens before an event, such as a preparty or a preseason meet-up. Avoid using it as a standalone noun in formal writing; instead, use full phrases like "pre-event" or "preliminary."
To precum, to pre-ejaculate.
"He accidentally wiped a bit of fluid from his fingertip before he even started touching himself."
In plain English: To pre something means to prepare it for use before you actually need it.
"The chef decided to pre the potatoes before roasting them."
Usage: The verb form referring to pre-ejaculation is highly informal and specific to sexual contexts, so it should only be used when discussing that precise physiological event. In general writing, avoid this usage as there are no other common everyday meanings for "pre" functioning strictly as a verb.
Before (something significant).
"Before the election results were announced, many voters felt uncertain about the outcome."
The word comes from the Latin term prae, which means "in front of." It entered English to convey its current sense of occurring before something else.