vesper-bird
a bird who sings in the evening (from "vesper," an archaic term meaning "evening")
hyacinth
a bell-shaped flower, typically of light purplish-blue color
tillage
the preparation of land for growing crops
throstle
an old British term for the song thrush (a type of bird)
furrows
long trenches carved into the ground, often by a ploughshare
yew
a type of tree, linked in mythology and superstition to long life and mystery
heath
an area of land that is uncultivated, especially in England
verdure
deep, strikingly green vegetation
aforetime
an archaic adverb meaning "previously" or "before this time"
Demeter
The ancient Greek goddess of harvest and agriculture, whose pleasure is mythologically linked to the Earth's fertility
burgeon
to flourish, grow rapidly
fitfully
in an irregular or spasmodic manner
undulation
the regular rising and falling of something
ethereal
supernaturally graceful and delicate
tether
(in this instance) the state of being constrained by a rope or chain