Sentence:  Green in the Church-yard, beautiful and green; / ... / And mantled o'er with <WSD>aboriginal</WSD> turf / And everlasting flowers. 
Meaning of the word marked with <WSD> tags:  First according to historical or scientific records; original; indigenous; primitive. (First attested in the mid 17th century.)<ref name=SOED>(page=6)</ref>