Entry 1 sense Webster, 1913 vegan /(vē"gŭn [or] vēj"ŭn)/ · ve·gan · IPA /ˈviːɡən/ 01 n. A vegetarian who does not eat any animal products, not even fish, eggs, or milk. 1. A vegetarian who does not eat any animal products, not even fish, eggs, or milk.