I'm slower than a sloth, yet have been known to travel faster than sound. Printers think I'm good for nothing yet bartenders charge good money for me. What am I?
The answer is a single English word. It can be found in any ordinary dictionary. No hyphens no trickery. No proper names fictional or non-fictional. Just an ordinary word. Not an abstract noun or nebulous concept. You can see and touch these just like you could, say, a tennis ball or a table (These objects aren't clues, they're just random examples of tangible objects).
Note: "Slower than a sloth" should be taken to relate to a race between me and the sloth. We would both move under our own power at our fastest speed towards the finishing line but the sloth would win.