Related Clues:

• Small rounded protuberance or lump
• A swelling on a root inhabited by symbiotic bacteria
• Signify agreement, and you'll reportedly get growth
• Mark carefully around university -- that's the point
• Small knotlike protuberance
• There's loss of mass from frozen core
• Much-used pencil, maybe
• Signal from university is key - if it gets more voluminous one might have to have it out with doctor
• Bump on a dial to aid gripping
• Small bump
• Gist (of a matter)
• Pencil lump
• Worn end
• Half-inch pencil
• Worn pencil, e.g