knop

noun

1.
a circular rounded projection or protuberance
knosp knurl boss knob
2.
a swelling on a plant stem consisting of overlapping immature leaves or petals
bud
3.
an ornament at the top of a spire or gable; usually a foliated fleur-de-lis
finial
4.
a bunch of hair or feathers or growing grass
tuft tussock