look up any word, like dirty sanchez:
 
1.
moving at a really slow speed
We're not going anywhere in this sluggish traffic.
by Jujurocs May 12, 2008
 
2.
The high from a slug (a promethazine coated cigarette).
"I'm feelin pretty pimpish."
"I'm feelin pretty sluggish after that slug."
by Kody Will Kyle Emily April 18, 2009
 
3.
wet or soggy..
can refer to anything.. pussy.. weather..
"Sluggish like a wet sponge"
- Airplane
by dazed+confused chick October 11, 2004