Area patrolled by Jim Rice

• Figuratively, whence some unexpected ideas
• Out of __ (from nowhere)
• Source of bizarre ideas, so to speak
• Site of Fenway Park's Green Monster
• Position behind shortstop
• Symbol of remoteness
• Where Why is, in "Who's on First?"

Wikipedia Word definitions in Wikipedia
Leftfield or left field may also refer to: Left field , a position in baseball The Leftfield , an event at a number of British music festivals Leftfield , a British electronica duo Leftfield , a music genre Leftfield Magazine , the magazine of Scottish ...

Wiktionary Word definitions in Wiktionary
a. From wikt:left field; off-the-wall