Sentence:  There were slow boys and bashful boys, feeble boys and riotous boys, boys that lisped and boys that stuttered, one or two lame ones, and a merry little <WSD>quadroon</WSD>, who could not be taken in elsewhere, but who was welcome to the ‘Bhaer-garten', though some people predicted that his admission would ruin the school. 
Meaning of the word marked with <WSD> tags:  A person of three-fourths Caucasian descent and one fourth African descent.