... a BricktionaryTM.
Wassat? A dictionary as used by Fred and Wilma Flinstone?
It's a BSL to English dictionary, with words arranged alphabetically by initial hand position of BSL. Three dimensional hand positions and gestures are "written" using two-dimensional annotation which looks like Klingon, say. I likened it in concept to the annotation used for choreography but whereas I know virtually nothing about BSL, I know absolutely nothing of choreography, so take that with a dose of salt. Fortunately there are also photographs showing the word being signed. But totally useless, as far as I can make out, for looking up how to sign an English word in BSL.
More to the point, in a contest between it and the Maglite, I reckon it's evens.