Possible Clues:

• Shape that's broader than it's long
• Alumnus, boring perhaps, certainly not square
• A rectangle which is not a square
• Tomb regularly made use of pine box
• Rectangular two-dimensional figure
• Rectangle with unequal adjacent sides
• Like kiwis and plum tomatoes, by shape
• Figure golf outside broadcast has fifty working up front
• The shape that's broader than long
• Eclair's shape