Related Clues:

• ___ diem
• Via
• As to
• ___ annum
• Up ___ point
• Part of w.p.m.
• By way of
• See 17-Down
• 'One ___ customer'
• ___ fault (overly so)
• Word in a price
• For this or that
• For each one
• A
• The 'p' in r.p.m.