hbo

As an initialism hbo

is hoger beroepsonderwijs (higher vocational education/training).

As a preposition towards is

variant of toward.

As an adverb towards is

(obsolete) in the direction of something (indicated by context).

As an adjective towards is

(obsolete) near; at hand; in state of preparation; toward.

As an initialism HBO

is home Box Office, a movie channel.

As a noun showtime is

the time at which a pre-scheduled entertainment-related event (a show) is set to begin.

As an interjection showtime is

a declaration that something is about to happen, particularly that the person speaking is about to act.