luò
a white horse with black mane
Phonosemantic compound. 马 represents the meaning and 各 represents the sound. Simplified form of 駱.
Evolution

Bronze script
Mid Western Zhou (~900 BC)
Seal script
Shuowen (~100 AD)
Clerical script
Eastern Han dynasty (25-220 AD)Traditional script
ModernSimplified script
ModernDefinitions