Simple past tense and past participle of bookend.(verb)
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Use "bookended" in a sentence
"The vote was not "bookended" by any doves as some had anticipated."
"Already boasting showings from a succession of on-the-money experimental club nights, tonight sees Richard D Clouston's cult kosmische and coldwave Cosey Club making its debut at the venue – and The Guide's week will be bookended by another visionary dance party."
"The poems are bookended by two songs, providing structural balance."