1
a
: a heavy thick board
especially
: one 2 to 4 inches (5 to 10 centimeters) thick and at least 8 inches (20 centimeters) wide
b
: an object made of a plank or planking
c
: planking
d
: an exercise in which a prone person balances on the toes and forearms while holding the rest of the body up and off the ground
Do two to three sets of these moves two days a week: push-ups (work up to 25) to build chest, shoulder and triceps strength; plank (support your body on your forearms and toes for up to 60 seconds) to build ab and back strength …—Selene Yeager
Start with basic moves like sit-ups, planks, and lunges …—Oprah Magazine
2
a
: an article in the platform of a political party
b
: a principal item of a policy or program
planked; planking; planks
1
: to cover, build, or floor with planks
2
: to set down forcefully
—usually used with down
3
: to cook and serve on a board
planked salmon
planked steak
Cite this Entry
“Plank.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plank. Accessed 23 Mar. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share