Word of the Day

I think it is important for me to learn some lingo before I get over to London...so I fit in and all.  On my vacation this summer with my dad in the UK, I saw this sign (somewhere in Wales) on a store window.  I thought it was a nifty word so I asked our tour guide what it meant... 

I found out it is pretty interchangable with nifty seeing as no one says it anymore.  It is defined as: old British slang for splendid or wonderful.  I kinda like it...I think I might bring it back!