Definitions
There are 3 meanings of the phrase
Spell Out.
Spell Out - as a verb
Make explicit; specify in detail
Example: "You should spell out your demands"
Spell fully and without abbreviating
Example: "Can you spell out your middle name instead of just giving the initial?"
Example Sentences
"Please spell out your name for me."
"Could you spell out the word 'onomatopoeia'?"
"I will spell out the instructions step by step."
"The teacher asked the student to spell out the answer."
"Let me spell out my expectations so there's no confusion."