I’ve noted this before (thanks to Calvin and Hobbes for that title), that the transition of words from nouns to verbs is to be deplored. Sadly, fighting this trend is a losing battle. Here’s an example of what I mean. The oldest quotation given for this word as a verb is as recent as 1962. The earliest instance given for the word as a noun is 1325.
2. = ACCESSION v. rare.