Possible Clues:

• Quadragesimal count
• With 38-across, number of geese it took to supply feathers for "Grandma's Feather Bed"
• -- winks, a short sleep
• Twice twenty
• Eight x five
• Malt liquor bottle, in slang
• Number of winks in a nap?
• Beer purchase in a large bottle, informally
• When life begins to be a bit like a stronghold?
• Number with all its letters in alphabetical order