Related Clues:

• Tiny work unit
• Not much work?
• Bit of work in physics class
• Joule component
• Physics class topic
• A little energy
• Heat: Prefix
• Early Semite
• Heat unit on a gas bill
• Unit of work, in physics
• A unit of heat
• SI unit of energy
• Temperature on island? Some heat
• Work unit across river, say
• Unit provided by the amphibious troops