Related Clues:

• Service period
• Stretch at work?
• Joule bit
• Be grudging
• 100 nanojoules
• Hoeing the garden, e.g.
• Income source
• Joule fragment
• You may be taken to it
• Time in the army, say
• Checklist item
• One dyne per centimeter measure
• Unit in a physics textbook
• Small amount of work
• Electron-volt multiple