■ verb
1》 have an obligation to pay (money or goods) to (someone) in return for something received.
2》 be under a moral obligation to show (gratitude, respect, etc.) or to offer (an explanation) to (someone).
3》 ( ~ something to ) have something because of.
Origin
OE āgan 'own, have it as an obligation', of Gmc origin; cf. ought 1 .