Based on the clue 'a portion maybe of cake', what is the answer?

Based on the clue 'a port on the new york state barge canal rochester...', what is the answer? Based on the clue 'a portable lamp or a green dc comics character', what is the answer? Based on the clue 'a portable music player with large speakers', what is the answer? Based on the clue 'a portent of things to come or the big placard tha...', what is the answer? Based on the clue 'a portion of a journey its also the part of a rela...', what is the answer? Based on the clue 'a portion of crater lake including wizard island', what is the answer? Based on the clue 'a portion of thailands border with laos is provide...', what is the answer? What is associated with: a portion of this avenue between the capitol the white house was designated a national histori…