Parsnip
From Memory Alpha, the free Star Trek reference
The parsnip is a vegetable from Earth, related to the carrot.
In 2373, the Jupiter Station Diagnostic Program Alpha-11, in its physical form of Lewis Zimmerman, claimed that if the EMH would not either undergo a full maintenace at McKinley Station or be reinitialised, it would eventually possess the intellectual capacity of a parsnip. (VOY: "The Swarm")
