agreement; consent; acceptance
An idiomatic expression meaning that someone has agreed or given consent, often used in the context of negotiations or formal discussions. The phrase literally refers to a 'curtain of consent' in traditional theater, implying that an agreement has been reached and the matter is settled.
An agreement was reached between the two parties.
The negotiations dragged on, but finally consent was given.
承知 alone means 'knowing' or 'consent', but 承知の幕 is a set phrase that specifically refers to the act of reaching an agreement, often in a formal or dramatic context.
The phrase originates from kabuki theater, where a 'curtain' (幕) is lowered to signal the end of an act or scene. 承知 (consent) combined with 幕 (curtain) metaphorically indicates that an agreement has been concluded, as if the curtain has fallen on the matter.