Verb (5-dan, る, transitive)
Usually written in kana
1. to treat (someone) to (something); to give (someone) a treat; to buy (someone a meal, drink, etc.)
おごらなくていいよ。You don't have to treat me.
Verb (5-dan, る, intransitive)
Usually written in kana
2. to be extravagant; to live in luxury
彼女は口がおごっているから、安い店には行かない。She has extravagant tastes in food, so she doesn't go to cheap restaurants.