From Middle English firre, from either Old Norse fýri (as in fýriskógr (“pine-wood”) or Old English fyrh, furh (as in furhwudu (“pinewood”), from Proto-Germanic *furhō, *furhijǭ (compare Dutch vuren, Low German Fuhr, German Föhre (“pine”), Danish fyr), from Proto-Indo-European *pŕ̥kʷeh₂ (compare Italian (Trentino) porca (“fir”), from *pérkʷus (“oak”) (compare Latin quercus (“oak”), Albanian shpardh, shparr (“Italian oak”), Punjabi ਪਰਗਾਇ (pargāī, “holm oak, Quercus baloot”)). Related to frith.
fir (countable and uncountable, plural firs)
- (chiefly countable) A conifer of the genus Abies.
- (chiefly countable) Any pinaceous conifer of related genera, especially a Douglas fir (Pseudotsuga) or a Scots pine (Pinus sylvestris).
- (uncountable) Wood of such trees.