Possible Clues:

• __-minded
• Shrink, in a way
• Raced up to the line with not much room to spare
• Thin mark on top of compass?
• See 24
• No end of concern with an overturned taper
• Become restricted
• Intolerant
• Limited in range? Initially nuclear weapon
• Keen, like pretty maids in garden, heading off to secure a little rumpy-pumpy