Related Clues:

• Metric weight
• The 'G' in EKG
• Small amount of liquor
• See 67-Across
• Mama's mama
• 15.432 grains
• Tiny weight unit
• Fat unit
• Mixologist's measure
• Family nickname
• Chemist's amount
• Liquid measure
• Cologne unit
• 1/8 of a fluid ounce
• Pharmacist's weight