With a Fremen suit in good working order, you won’t lose more than a thimbleful of moisture a day—even if you’re caught in the Great Erg.
…. there, and it is open sand down to the erg.
We are in the central erg beyond the Harkonnen patrols.
And I am a Fremen born this day here in the Habbanya erg.
Must I prove it by leaving every Fremen tribe in the erg without a leader?
ERG: an extensive dune area, a sea of sand.
He lifted his head and looked to the south, reminding himself that the maker summoned wild from the erg was an unknown quantity, and the one who summoned it was equally unknown to this test.
Until he did this thing himself, even the great southlands — the area some twenty thumpers beyond the erg — were denied him unless he ordered a palanquin and rode like a Reverend Mother or one of the sick and wounded.
"Each bush, each weed you see out there in the erg," she said, "how do you suppose it lives when we leave it?
(Water is poisonous to shai-hulud as the Fremen had long known from drowning the rare "stunted worm" of the Minor Erg to produce the awareness-spectrum narcotic they call Water of Life.
There are no more uses of "erg" in the book.
Show samples from other sources
He estimated that it contained about 1,000 ergs of chemical energy.
While straining in this way, focusing every erg of energy on his eyes, his bowels suddenly opened up, and before he could realize what he knew, liquid stools were running down his legs.