Related Clues:

• Midterm event
• Do lab work
• Multiple choice, say
• Give a whirl
• Part of 57-Down
• Measuring device
• Reason for cramming
• Marketing event
• Put out a feeler
• Acid __
• Try, as something new
• Put through a trial
• What a student crams for
• Cause for cramming
• Putting a toe in the water, say