Definition of "ked"

Pouring with tobacco liquor is fatal to these insects, and also to the ked, Hippobosca ovina, and to the tick, Acarus reduvius, if it fairly reach them.

1839, Rev. Dr Singer, Flies and other insects hurtful to live stock, &c.: Transactions of the Highland and Agricultural Society of Scotland, page 132

The common differential diagnoses include cutaneous myiasis, sheep scab and lice; however, keds are readily visible to the naked eye. […] Adult keds are 4-6 mm long, dark red and readily visible on the neck and forelimbs.

2006, Philip R. Scott, Sheep Medicine, page 263

They watch the sheep for signs of insects or pests, such as sheep keds and sheep lice, that can irritate the sheep causing them to scratch their fleece against fences or troughs and damage or tear the wool.

2007, Carrie Gleason, The Biography of Wool, page 12