Emily Dickinson Lexicon

PUN, n. [W. pun. equal.]

An expression in which a word has at once different meanings; an expression in which two different applications of a word present an odd or ludicrous idea; a kind of quibble or equivocation; a low species of wit. Thus a man who had a tall wife named Experience, observed that he had, by long experience, proved the blessings of a married life. A pun can be no more engraven, than it can be translated. – Addison.