Green’s Dictionary of Slang

1. married.

1873

Sl. Dict. 99: Bucked to be married. Also to be taken in custody. Both uses of the word common and exchangeable among the London lower classes.

2. arrested.

1873

see sense 1.

3. (Irish) finished, ‘done for’ [? euph. for fucked adj.¹ ].

1995

S. Connaughton Border Diary n.p.: Albert gives the emotions full value. He has to say the line ‘We’re bucked now, me boyo. She’s dead.’ [BS].