Related Clues:

• Warship
• Stand-in, for short
• Sandwich shop order
• U-boat, e.g.
• Footlong, e.g.
• Meal known by its initials
• Eatery order, perhaps
• Sandwich shop order, perhaps
• Non-kosher sandwich
• Short order at the diner?
• 104-Across, for one
• PBJ alternative
• Sandwich letters
• Luncheonette order
• Short short-order order