Related Clues:

• The 'm' in the equation y = mx + b
• Grace Potter "St. Peter, won't you open up the big white ___"
• Barrier on the borders of Garden State
• Place for sledding
• Entry through a fence
• Estate entryway, often
• Go downhill, say
• Concert receipts, collectively
• Airport section
• Black Crowes swing a "Garden" one open
• Sledding area
• Entry to arena
• The way in for some learning a technique
• Some characters building a terrace in opening
• Entryway, of a sort