fartlek

[fahrt-lek]
noun
  1. a training technique, used especially among runners, consisting of bursts of intense effort loosely alternating with less strenuous activity.

Origin of fartlek

1950–55; < Swedish fart speed + lek play
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for fartlek

fartlek

noun
  1. sport another name for interval training

Word Origin for fartlek

Swedish, literally: speed play
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for fartlek
n.

1952, Swedish, from fart "speed" (cf. Old Norse fara "to go, move;" see fare (v.)) + lek "play" (cf. Old Norse leika "play;" see lark (v.)).

Online Etymology Dictionary, © 2010 Douglas Harper