Normally open
Closer stands for:
- Switch with which a circuit is closed, see switch (electrical engineering) #Switching function
- Correctional officer (colloquial)
NO or NO is the surname of:
- Liselotte Schlerger (1918–2004), German local history researcher and archivist
- Peter Closer (* 1939), German sports official and basketball referee
- Theodor Schliesser (1922–2012), German veterinarian and university lecturer
See also:
Wiktionary: Closer - explanations of meanings, word origins, synonyms, translations