Related Clues:

• Burn the midnight oil, perhaps
• Completely fill, as a hungry person
• Fill and then some
• Make replete
• Study, and then some
• Study at the last minute
• Prepare at the last minute, in a way
• Fulfill fully
• Push together
• Really fill
• Study fast
• Give a 47-Across
• Fill the bill
• Study intently
• Study all night, say