What is hot dallor?

It seems like there may be a typo in your question, as "hot dallor" does not appear to be a commonly known term.

If you meant to ask about the US dollar (often referred to as the "dollar" without the double 'l' in "dollar"), it is the official currency of the United States and is one of the most widely used currencies in the world. The US dollar is symbolized by the sign "$" and is divided into 100 smaller units called cents.

The value of the US dollar can fluctuate based on various factors such as economic conditions, interest rates, inflation, and geopolitical events. It is often considered a "hot" currency in global currency markets due to its status as the world's primary reserve currency and its use in international trade and finance.

Please provide more context or correct the typo if you were asking about something else.