trad

Etymology

Shortening of traditional.

adj

1. (chiefly music) traditional
   I've been listening to trad jazz lately.

noun

1. (climbing) traditional climbing.
2. (music) Irish traditional music
   "Lonely Planet Ireland's Best Trips": https://books.google.com/books?id=N6x9BAAAQBAJ&pg=PT251&dq=%22trad+music%22+irish+music&hl=en&sa=X&ei=I0qUVaWXLIjjsAWYyILQDg&ved=0CCUQ6AEwAg Miltown Malbay hosts the annual Willie Clancy Irish Music Festival, one of Ireland's great trad music events.
   "Fodor's Ireland 2010": https://books.google.com/books?id=dhfTd0wKanIC&pg=PA443&dq=%22trad+music%22+irish+music&hl=en&sa=X&ei=I0qUVaWXLIjjsAWYyILQDg&ved=0CFAQ6AEwCQ Galway is the heart of Trad— the city and its environs have nurtured some of the most durable names in Irish music.
3. (informal, Catholicism) A traditionalist.
4. (informal) Anything traditional, such as a school or a model of car.