to step or walk on or over (something)
to walk along (e.g. a road or path)
to beat or press (something) with the feet; to trample or crush (something)
to form (e.g. a path) by treading
to execute (e.g. a dance) by stepping or dancing
to move on foot; to walk
Tread lightly, she is near — Oscar Wilde
to set foot
to put one's foot; to step
He trod on a stone
to give offence to or hurt somebody's feelings, esp by encroaching on their rights
to stay afloat in the same position in deep water with a treading motion of the feet, usu aided by the hands
to fail to make progress