book·end 
/ˈbʊkˌɛnd/ noun
plural book·ends /ˈbʊkˌɛnd/ noun [count] : something placed at the end of a row of books to hold them up
▪ a pair of bookends shaped like horses ▪ He used an empty flowerpot as a bookend.
▪ a pair of bookends shaped like horses ▪ He used an empty flowerpot as a bookend.
