a long narrow flat piece of wood that is used for making floors, etc.
تخته, تخته چوبی, تخته دراز
2
a main point in the policy of an organization, especially a political party
محور اصلی, موضوع اصلی, رکن, نقطه کلیدی
The central plank of the bill was rural development.
3
an exercise in which you lie on your stomach and raise your body off the ground by pressing down on your hands until your arms are straight and then hold that position for a fixed period of time
تمرین پلانک, حرکت پلانک
I do exercises to strengthen my stomach muscles, like push-ups and planks.