Related Clues:

• David Letterman feature
• Open space
• Generation separation
• Unit price word
• Intermission
• __ year
• Part of a speed limit
• Lacuna
• The ''p'' in wpm
• Unit-pricing word
• Each, to a grocer
• Word on some price tags
• -- diem
• Allotment word
• Prefix denoting "in a"