sissis /sɪs/ noun spoken informal 
a name used when speaking to your sister
a name used when speaking to your sister- Museum of Modern Art
- Museum of the Moving Image
- museum piece
- Museveni, Yoweri
- mush
- mushroom
- mushroom cloud
- mushy
- mushy peas
- Musial, Stan
- music
- musical
- musical chairs
- musical comedy
- musical instrument
- musically
- music box
- music hall
- musician
- musicianship
- musicologist
- musicology
- music stand
- musing
- musingly