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 had $21 billion in revenue last year, and expects to pay out $4.9 billion in dividends in 2011, according to the company's website, including about $27 million to holders of fixed and variable annuities.