Possible Clues:

• Lean part way over peak
• Wring the neck of
• Gangly one
• A less than meaty bit of science paper, pejoratively speaking
• Poor quality meat - throttle
• Lean end of mutton neck
• Throttle in car's manipulated to gain acceleration
• Gaunt fellow
• Some neck from last of mountaineers on cliff
• 31 Down person