Meaning : To take one's place in a military formation or line.
Example :
Troops fall in!.
Meaning : Become part of. Become a member of a group or organization.
Example :
He joined the Communist Party as a young man.
Synonyms : get together, join
Fall in ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Fall in ka matlab kya hota hai?