(figuratively) to be a good person at heart, to be basically a good person, to have one's heart in the right place

plural of bruit de fond

(film) background noise

long-distance race

(physics, astronomy) cosmic microwave background

(figuratively) from the bottom of one's heart

(figuratively) from top to bottom, from wall to wall, thoroughly

(informal) at full throttle, pedal to the metal, hell-for-leather (at full speed)

Alternative spelling of para-ski de fond

para cross-country skiing; a disability sport, an adapted version of cross-country skiing (“ski de fond”)