Emily Dickinson Lexicon

SUM, v.t.

1. To add particulars into one whole; to collect two or more particular numbers into one number; to cast up; usually followed by up, but it is superfluous. Custom enables a man to sum up a long column of figures with surprising facility and correctness. The hour doth rather sum up the moment, than divide the day. – Bacon.
2. To bring or collect into a small compass; to comprise in a few words; to condense. He summed up his arguments at the close of his speech, with great force and effect. “Go to the ant, thou sluggard,” in few words, sums up the moral of this fable. – L'Estrange.
3. In falconry, to have feathers full grown. With prosperous wing full summ'd. [ Unusual.] – Milton.