Divagate

divagate \ˈdī-və-ˌgāt, ˈdi-\ intransitive verb: to wander or stray from a course or subject; diverge, digress

Etymology: Late Latin divagatus, past participle of divagari, from Latin dis- + vagari to wander

I divagate when looking up a word in the dictionary. Other words jump out and distract; they’re so tempting I can’t resist reading their definitions.