Emily Dickinson Lexicon

crest (-s), n. [ME < L. crista, tuft, plume.] (webplay: grow, head, spirit, top, worn).

1. Badge; emblem of nobility; symbol of authority; mark of prestige; insignia of a royal family; physical representation of high status; [fig.] royal character.
2. Top; summit; highest point; [fig.] success; ascension; moment of excellence; emotional high point.