RETAIN definition

(1) Keep in one's mind

"I cannot retain so much information"

(2) Secure and keep for possible future use or application

"The landlord retained the security deposit"

"I reserve the right to disagree"

(3) Allow to remain in a place or position

"We cannot continue several servants any longer"

"She retains a lawyer"

"The family's fortune waned and they could not keep their household staff"

"Our grant has run out and we cannot keep you on"

"We kept the work going as long as we could"

(4) Hold within

"This soil retains water"

"I retain this drug for a long time"