Noun digression has 3 senses
  1. digression, aside, excursus, divagation, parenthesis - a message that departs from the main subject
    --1 is a kind of message, content, subject matter, substance
    Derived form: verb digress1
  2. diversion, deviation, digression, deflection, deflexion, divagation - a turning aside (of your course or attention or concern); "a diversion from the main highway"; "a digression into irrelevant details"; "a deflection from his goal"
    --2 is a kind of turn, turning
    --2 has particulars: red herring
    Derived form: verb digress1
  3. digression, excursion - wandering from the main path of a journey
    --3 is a kind of journey, journeying
    Derived form: verb digress2