Related Clues:

• Starting point
• See 53-Down
• Carrot or turnip, e.g.
• Genesis
• Very beginning
• Origin
• Applaud (for)
• Herbicide's target
• Pull (out)
• (0,0) on a graph
• Edible part of a parsnip
• Inception
• Underground part
• Carrot, e.g.
• Dig (for)