Definitions

1. preposition

in a direction towards the surface or ground; in a direction towards something

“She fell onto the couch.”

2. preposition

used to indicate movement from one place to another, especially from a higher to a lower place

“The cat jumped onto the table.”

3. adverb

used to indicate the end of a process or movement

“The bus will be onto the main road in five minutes.”

4. verb

to put something on or in contact with something else

“The tree branches will branch onto the ground.”