dejection
a sad or depressed state
isles
islands - bodies of land surrounded fully by water
untrampled
something protected and fresh, without having been crushed
star-showers
meteor showers, which feature multiple shooting stars in a short period of time
lament
a passionate expression of sorrow
care (noun)
used here to mean worry, difficulty, or exhaustion
till
until
o'er
over
monotony
something which repeats itself in only one way; a dull repetition
linger
not dissipating immediately but instead petering out over a long period of time