Possible Clues:

• Workout wt
• Flour sack wt., maybe
• Wgt. of some dumbbells
• Like some dumbbells: Abbr.
• Wt. of some flour sacks
• Potato sack wt., maybe
• Certain dumbbell weight: Abbr
• Potato sack wt., perhaps
• Dumbbell wt
• Dumbbell weight abbr