Cool.
I'm just trying to figure out which knob on my amp to re-label "gank."
I think I possibly coined that term a few years ago (or at least I use it a lot!) to represent a certain upper mid response.
+1 to all the comments above, it is that classic upper mid tone that a maple board tends to produce that simultaneously makes your slap and 'digging' in tone sound, well, a bit 'ganky' in the upper mids (harsh, grindy, bright) when played solo, but also allows that 'windings on the B string' (I stole that discriptor from my buddy Mikebass) sort of tone to come through in a mix and on a gig.
It is very easy to reduce with most upper mid controls on many amps, (GK, Markbass, etc.) which are typically set with a relatively narrow Q and a center point somewhere around 1K or so. Also, many cabs which have the typical 'space between the top of the driver response and the start of the tweeter' (Epifani UL's are a good example) can reduce this ganky nature of many ash/maple instruments. Bergantino AE's (my fav's) are VERY present in the 1K frequency, and really grind with these sorts of instruments (I love that).
Finally, strings can control the gank also. The Sadowsky steels are VERY upper mid present (both blacks and blues), and really bring out the aggressive upper mids of the ash/maple spec (especially with the single coils, which emphasize the upper mids/lower treble more than the HC's). The Hi Beams are a good example of a string with a strong dip in that area, making even the most aggressive grindy basses sound more pure and smooth up top.
I primarily use a Markbass F500 (quite upper mid present), Bergantino AE cabs (quite upper mid present), a Sadowsky Ash/Maple vintage with singles (quite upper mid present) and Sadowsky Blue Label steels (quite upper mid present)

.... so you get an idea of my love for the gank! However, a simple 3 or 4db cut at around 1K, and I'm back in 'smoothville' for the most part!
It is almost impossible to dial in (i.e., with a more smooth sounding alder/RW style bass).