You're referring to the word 'plumb' - as in plumb line.
The spelling for the word describing something that is vertically straight is "plumb."
The likely word is spelled vertically ("going straight up").
you spell it plumb
Vertically means straight up and down. Drapes hang vertically. A flag pole is vertical.
Vertical means straight up and down,aligned with the direction of gravity. Vertically upward means vertical in the up direction. So if you jump directly straight up that is vertically upward; when you land you are travelling vertically downward.
une prune (fem.)
Moving directly straight either horizontally or vertically. As if walking on a straight line.
That is the correct spelling of "damson" (a variety of plum).
Moving directly straight either horizontally or vertically. As if walking on a straight line.
You jump straight up in the air
The plumb line is a vertical straight line.
The rocket launcher that shoots straight up in the air and comes down vertically on a enemy or target is called a Javelin.
You hold straight up; but if you want to type with a landscape keyboard you hold it straight across.