Definition of "Tuinal"

In the cold winter nights, the old town it was chill / But there were boys in the cafes who'd give you cheap pills / If you didn't have the money, you'd cajole or you'd beg / There was always lots of tuinal on the old main drag.

1985, Shane MacGowan (lyrics and music), “The Old Main Drag”, in Rum Sodomy & the Lash, performed by The Pogues

His horror of insomnia, compounded with a family history of compulsive worrying, caused him to down three or four Placidyls, Seconals, Quaaludes, or Tuinals almost every night—and often it was a combination of all four.

1985, Priscilla Presley, Sandra Harmon, Elvis and Me, Putnam, page 151

Richard's suit of Ursula was progressing, albeit at the pace of a snail on Tuinal.

1996, Will Self, The Sweet Smell of Psychosis, Bloomsbury, published 2011, page 68