From 'arag; a weaving; a braid; also a shuttle -- beam, weaver's shuttle.
see HEBREW 'arag
H708. ereg
אֶ֫רֶג noun [masculine] loom (see GFMPOS Oct.1889) — אֶרֶג Judges 16:4 hand-loom to which Samson's hair was fastened, plucked up by him (׳א object of וַיִּסַּע; strike out הַיְתַד as gloss, compare GFM above); Job 7:6 אָ֑רֶג מִנִּי קַלּוּ יָמַי my days are swifter than a loom.
אַרְגֹּב see רגב.
אַרְגָּז see רגז.