Webster’s Revised Unabridged Dictionary · 1913
Chin cough
Chin′ cough′ (chĭn′ kŏf′; 115). [For chink cough; cf. As. cincung long laughter, Scot. kink a violent fit of coughing, akin to MHG. kīchen to pant. Cf. Kinknaust, Cough.] Whooping cough.
Webster’s Revised Unabridged Dictionary · 1913
Chin′ cough′ (chĭn′ kŏf′; 115). [For chink cough; cf. As. cincung long laughter, Scot. kink a violent fit of coughing, akin to MHG. kīchen to pant. Cf. Kinknaust, Cough.] Whooping cough.