point source point of departure rootage point fountainhead headwater spring root place of origin wellspring beginning origin cradle headspring trailhead wellhead home birthplace derivation provenance jumping-off place head trail head provenience

inspiration seed muse germ taproot

source materials papers wellspring written document fountainhead document well

gold mine installation facility Golconda goldmine

intercept factor intersection point intersection ingredient attracter constituent attractor point of intersection element component

finger signalise inform designate show reflect point out signalize call attention indicate

navel military position crossing topographic point rootage midair position omphalus crinion focus vanishing point corner root celestial point location geographic point geographical point hilum bellybutton omphalos beginning origin spot punctum trichion blind spot optic disc optic disk focal point hot spot nidus node center belly button McBurney's point abutment source hotspot ground zero antinode place umbilicus midpoint chokepoint centre pressure point

rallying point talking point import significance meaning crux of the matter bottom line crux signification

pinnacle summit ladder standard of life level degree ultimacy extent ultimateness quickening acme elevation state height state of the art meridian peak climax tiptop standard of living stage end point superlative top plane resultant

sticking point minutia item nooks and crannies respect trifle fact regard triviality nook and cranny detail technicality