when used in wood construction it is a 2x or a 1x long enough to mark whatever the carpenter needs to record - window sills and headers, door heights, stair height floor to floor.
a rod like structure
They look like rod shaped, lines, or dots depending on which one it is.
rod shaped bacterium
an apple
It doesn't look like anything - the plot is what happens in the story.
bacilli bacteria are rod shaped.
Rod Shaped
it looks like a tie when you go to work or court or grautions
What you're referring to is a tie-rod. A tie-rod is a hardened straight rod that is threaded on either end. On the ends are ball joints that connect the steering knuckle to the steering rack.
Like a mushroom
No, cocci look like clusters of grapes and rods are rod-shaped.
A pike is the old wording for a spear. A rod with a sharpened end is usually a basic "pike".