From Middle English *fak, fec, fæc (“space, compartment”), from Old English fæc (“space of time, while, division, interval; period of five years, lustrum”), from Proto-Germanic *faką (“division, department, space”), from Proto-Indo-European *pÀǵ- (“to fasten, fix”). Cognate with West Frisian fek, Dutch vak (“section, compartment”), German Fach (“compartment”), Swedish fack (“compartment, box, department”), Latin pangō (“fasten, fix”).
- fec (obsolete)
fack (plural facks)
- a compartment, a box, a slot (one of several)
- a trade, a profession, a subject of expertise (seen as a compartment of the larger work life)
- a trade union; Contraction of fackförening.
- (compartment): bankfack, frysfack, handskfack, postfack
- (trade): fackansluten, fackidiot, facklitteratur, fackombud, fackspråk, fackförbund, fackförening, facklig