Learner's definition of DEFER
to choose to do (something) at a later time
see also tax-deferred
She deferred work on her book.
The accountant advised us not to defer our taxes. [=not to pay our taxes later]
She'll defer her decision.
defer to (someone)
to allow (someone else) to decide or choose something
defer to (something)
to agree to follow (someone else's decision, a tradition, etc.)