Well, I never would have thought this.
It appears to me that we don’t have a word in Afrikaans for .. icicle.
I was stumped, and I stumped every online English-Afrikaans translator in my search for one.
The Dutch word is ijskegel (ice cone), and therefore I would go with yskegel in Afrikaans.
Watch out below — for blobs of ice water, or little spears of ice, coming down.