Quick answer
Nisha is a girl name meaning "night".
Meaning and history
From Sanskrit निशा ( niśā ) meaning "night".
Notes and context
Usage: hindi, marathi, kannada, malayalam, tamil, telugu, gujarati, bengali, nepali | Hindi: निशा; Kannada: ನಿಶಾ; Malayalam: നിഷാ; Tamil: நிஷா; Telugu: నిషా; Gujarati: નિશા; Bengali: নিশা