side plank

noun

plural side planks

: an exercise in which a person balances on the outer edge of one foot and on the forearm or hand of the same side while holding the rest of the body up and off the ground in a straight line

… a side plank is an effective way to target your core muscles … without adding more pressure to the low back, which can happen during a forward-facing plank.

—Emily Laurence

Do a set of side planks after each set of pushups, holding for 30-45 seconds per side.

—Rob Williams

Word History

First Known Use

2000, in the meaning defined above