Green’s Dictionary of Slang

bowman adj.

[? Fr. beau, good-looking]

[late 17C–early 18C] good, excellent, first-rate, a general positive; often as all’s bowman, everything is in order.

In compounds

bowman ken (n.) (also Ken Bowman) [ken n.1 (1)] [late 17C–early 19C] (UK Und.)

1. a house considered worth robbing.

2. a house occupied by thieves.

bowman-prig (n.) (also beauman-prig, boman-prig) [prig n.1 ]

[early 18C] a first-rate thief.