The Collaborative International Dictionary of English v.0.48:
Knop \Knop\ (n[o^]p), n. [OE. knop, knoppe; cf. D. knop, knoop,
G. knopf, Dan. knap, knop, Sw. knapp, knopp, button, bud,
Icel. knappr, and E. knap, n. Cf. Knap, Knob.]
1. A knob; a bud; a bunch; a button.
Four bowls made like unto almonds, with their knops
and their flowers. --Ex. xxv. 21.
2. (Arch.) Any boldly projecting sculptured ornament; esp.,
the ornamental termination of a pinnacle, and then
synonymous with finial; -- called also knob, and
Knop sedge (Bot.), the bur reed (Sparganium); -- so
called from its globular clusters of seed vessels.