Meaning trap
fall out
lose hair or teeth
If your hair or a tooth falls out, it comes loose and drops out of your head or mouth.
phrasal verbB1common
Don't mix these meanings
Same phrase, different job.
lose hair or teeth
If your hair or a tooth falls out, it comes loose and drops out of your head or mouth.
Hear it in context
Notice where the phrase sounds natural.
My little brother's front tooth fell out while he was eating an apple.
When I was a child, my parents told me to put my tooth under the pillow when it fell out.
Fix the pattern
One small grammar move makes it sound right.
Not: My hair is falling down.
Say: My hair is falling out.
Hair coming loose from your head 'falls out', not 'falls down'.