mashed potato

Short definition from Wiktionary

Noun

1. 1
   Alternative form of mashed potatoes (“a dish consisting of potatoes that have been boiled, mashed to a pulpy consistency, and mixed with such ingredients as butter or milk”).
2. 2
   A single potato prepared in this manner.
3. 3
   A dance or a dance move popular in Western culture the 1960s.

Proper noun

1. 1
   Alternative letter-case form of mashed potato (“1960s dance”).