In early use: acknowledgement of allegiance or subjection; (later) recognition or acknowledgement of something as true, valid, legal, or worthy of…

Grateful, courteous, or due recognition of an obligation, gift, benefit, etc., or of a message received; gratitude or appreciation expressed or…

Acknowledgement or admission of an achievement, service, ability, kindness, etc.; appreciation. Also: an expression of this. Now frequently in in reco…

Recognition; gratitude. Obsolete. rare.

= recognition, n. Obsolete. rare.