gash

A deep cut.

Unwittingly I slashed a gushing gash in my hand with a switchblade.

Then Beowulf too rallied. With his whetted dagger he slit a gash in the serpent's middle.

A vulva.

“Oh Gertie it’s true. It’s all true. They’ve got a horrid gash instead of a thrilling thing.”

A woman.

"Will you bastards quit singing the blues? You're young, and there's plenty of gash in the world, and the supply of moon goes on forever," Simonsky said.

To make a deep, long cut; to slash.

My leg got gashed.

Rubbish, particularly on board a ship or aircraft.

[…] each man was on 'gash duty' about once in eighteen days.

You will learn flight safety, aircraft duties, uniform, SEP, oxyCrew, gash cart, safety card, bar seals, life jacket, diagram, uplift, C209, plonky kit, Crew lounge!

Nonsense.

I hope you don't mind, but instead of “a load of gash” in this paragraph, could we say, “completely without merit”?

Something low quality.

This new one he's got for free off a friend (I think), but it's absolute gash. It's huge and doesn't fit in with the deco of the room, but because he's got it for nowt he's not arsed about that.

When you load up the game, the first thing you notice is that it looks like complete and utter gash. Everything is made up of ugly blocks.

Unused film or sound during film editing.

Poor-quality beer, usually watered down.