From gama'; properly, an absorbent, i.e. The bulrush (from its porosity); specifically the papyrus -- (bul-)rush.
see HEBREW gama'
H1573. gome
גֹּ֫מֶא noun masculineJob 8:11 rush, reed, papyrus (compare Löwp. 55) (Late Hebrew גּוֺמֶא, Ethiopic loan-word, according to Di; — name from swallowing, sucking up, water? so Thes, compare Che Isaiah 18:2 and elsewhere; = Coptic gome, see Di Exodus 2:3 whence others derive as loan-word) — גֹּ֫מֶא 2:3 3t.; — rush, paper-reed, (Egyptian) Job 8:11 ("" אָחוּ); collective Isaiah 35:7 ("" קָנֶה); as material, ג ׳תֵּבַת Exodus 2:3 chest of paper-reed; ׳כְּלֵיגֿ Isaiah 18:2 vessels of paper-reed.
גמד (√ of following; compare Arabic congeal, become solid; be hard, stern; also cut, cut off; Aramaic גְּמַד contract; Aph`el be bold, daring).