1. anything set upright :

2. a ship's mast , ἱστὸν στῆσαι or στήσασθαι to step the mast , (Homer):—; a rod, pole , (Herdotus Historicus)

3. the beam of the loom, which stood upright , instead of lying horizontal as in our looms, (Homer); ἱστὸν στήσασθαι to set up the beam and so begin a web, (Hesiod); ἱστὸν ἐποίχεσθαι to traverse the loom , because the weaver was obliged to walk to and fro, (Homer)

4. the warp that was fixed to the beam, the web , (Homer) (ML)