Answer:
A single syllable do I claim black was my most famous name; Fetal to mortals here below thousands have I slain in a single blow.
Better touch me before you proceed to second.
I run smoother than any rhyme, I love to fall but cannot climb. What am I?
I invade your home once a yearโฆbut only if youโve been good.
I have four wings, but cannot fly, I never laugh and never cry; On the same spot Iโm always found, toiling away with little sound. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.