The art or skill of a showman; the ability to entertain people with a theatrical style of performance or presentation; theatrics.

= showmanship, n.

playing to the gallery (see sense 4a above); showy play designed to gain applause; also figurative.

Hence, an enterprise set on foot with the object of gaining reputation or signal advantage. In soldiers' language often vaguely: an attack or…

= showmanship, n.

Ornamental, as opposed to plain, work, esp. in needlework, crochet, knitting, or the like; rarely, a piece of such work. Also figurative.

slang. Behaviour characteristic of a hot dog (hot dog, n. 2); showing off, hot-dogging.