Opposable :
opposable
English Meaning :
(Adjective : Capable of being placed opposite to something)
(Adjective : Capable of being placed opposite to something)
Example : Their hands had only three digits: two fingers and an opposable thumb.
Their hands had only three digits: two fingers and an opposable thumb.
Word Example from TV Shows :

A Homo habilis discovering
his OPPOSABLE thumbs says, "What?"
The Big Bang Theory Season 1, Episode 6

A Homo habilis discovering
his OPPOSABLE thumbs says, "What?"
The Big Bang Theory Season 1, Episode 6