countable noun. 1  A peninsula is a long narrow piece of land which sticks out from a larger piece of land and is almost completely surrounded by water. 2  a narrow strip of land projecting into a sea or lake from the mainland. 3  a land area almost entirely surrounded by water and connected with the mainland by an isthmus.
Northwestern Mutual Customer Service Phone Number Phone Number of Northwestern Mutual is +1-414-271-1444. Northwestern Mutual is one of the leading insurance company situated in the United States.
Northwestern Mutual Contact Information: +1-414-271-1444 Customer Care Number The Northwestern Mutual Company serves customers with several customer care centers located in different locations that help customers to solve problems, provides solutions to queries, and others.