Definition of plank down
1
: to set down forcibly or with emphasis
- was herded into a corner and planked down among five other sufferers
- —Thomas Wood †1950
- delighted to slam us all in jail and plank down martial law
- —Laura Krey
2
: to pay or put down (money) on the spot
- pulled out a silver dollar and planked it down for a year's subscription
- —A. W. Long
- planked down a fistful of money
- —Irish Digest
: to declare oneself forcibly or unmistakably
- planked squarely down on the side of the government
- —Mollie Panter-Downes
