Retrain has 4 different meanings across 1 category:
Verb
Noun
1
An instance of retraining.
Verb
1
teach new skills
"We must retrain the linguists who cannot find employment"
2
train again
"He is retraining to become an IT worker"
3
To train again; especially, to train or study in a new subject or job
Broader Terms (hypernyms)