/sherrt"tayl'/ , n.
1. the part of a shirt below the waistline.
2. Journalism. a brief item added at the end of a related newspaper story. Cf. follow-up (def. 3b).
adj.
3. quite young and immature in behavior.
4. Chiefly Midland and Southern U.S. of distant relation, esp. by marriage: some shirttail cousins I'd never met.
v.t.
5. Informal. to append or add (an item) to a discussion or writing: The tariff concessions were shirttailed onto the trade bill.
[ 1835-45, Amer.; SHIRT + TAIL 1 ]