### Clue: One of Groucho's brothers almost landed on river, going north in airship (8)
### Answer: ZEPPELIN 
 ### Explanation: Definition: airship
 "Zeppo"(youngest of Groucho Marx's brothers) **minus ****its last letter**(almost) **placed above**(landed on, in a down clue) **reversal of**(…, going north, in a down clue) NILE(Egyptian river).