lowbell

noun2

1. •
   A bell used in fowling at night, to frighten birds, and, with a sudden light, to make them fly into a net.

   • The fowler's lowbell robs the lark of sleep. — 1700
2. •
   (no longer used) A bell to be hung on the neck of a sheep or cow.

   • […] take the lowbell […]; toll this bell just as a weather sheep does, while he is feeding in pasture ground […] — 1831