This is the translation of two different Biblical words.
Hebrew, or rather Egyptian, ahu, Job 8:11—probably the Cyperus esculentus, a species of rush eaten by cattle, the Nile reed
It also grows in Israel.
rendered “meadow” in Genesis 41:2, 18
In Exodus 2:3, 5; Isaiah 19:6, it is the rendering of the Hebrew suph_, a word which occurs frequently in connection with _yam; as yam suph, to denote the “Red Sea” or the sea of weeds (as this word is rendered, Jonah 2:5). It denotes some kind of sedge or reed which grows in marshy places.