[Probably in origin a misprint or other error for throttling. See quots.

1

1726.  [? N. Bailey], Dict. Rust. (ed. 3), Throstling, a Disease in Black Cattle, which proceeds from humours gathering under their throats, which so dangerously swell the Glands, that the Beast will be choak’d if not relieved.

2

1753.  in Chambers, Cycl. Suppl.

3

1828–32.  in Webster; and in later Dictionaries; but not known to Veterinary Surgery.]

4