The Collaborative International Dictionary of English v.0.48:

Lowbell \Low"bell`\, v. t.
   To frighten, as with a lowbell.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lowbell \Low"bell`\, n. [Low a flame + bell.]
   1. A bell used in fowling at night, to frighten birds, and,
      with a sudden light, to make them fly into a net.
      [1913 Webster]

            The fowler's lowbell robs the lark of sleep. --King.
      [1913 Webster]

   2. A bell to be hung on the neck of a sheep.
      [1913 Webster]

            A lowbell hung about a sheep's . . . neck. --Howell.
      [1913 Webster]