| 1 | Ido | planko | plank, board |
| 2 | English | plank | A long, broad and thick piece of timber, as... |
| 3 | German | planke | — |
| 4 | Middle Low German | planke | — |
| 5 | Old French | planke | Alternative form of planche |
| 6 | Vulgar Latin | planca | — |
| 7 | Latin | palanca | slat, plank or stake; palanka, a palisaded... |
| 8 | Ottoman Turkish | پلانقه | a kind of palisaded fortification erected by the... |
| 9 | Italian | paranco | hoist |
| 10 | Italian | palanco | Alternative form of paranco |
| 11 | Vulgar Latin | palanca | slat, plank or stake; palanka, a palisaded... |
| 12 | Latin | phalanga | wooden roller; carrying pole; alternative form of... |
| 13 | Ancient Greek | φάλαγξ | line of battle, battle-array; ranks of an army;... |
| 14 | Proto-Indo-European | bʰelǵ- | to balk, beam |