### Clue: Row about Maine's abbreviation – look up and watch maybe (10)
### Answer: TIMEKEEPER 
 ### Explanation: Definition: watch maybe
 TIER(a row/an arranged line of similar objects) **containing**(about) [ME(abbrev. for the US state of Maine) + **reversal of**(… up, in a down clue) PEEK(to look quickly or slyly)].