Hottest chili. Share. The hottest chilli is Smokin Ed's 'Carolina Reaper', grown by The PuckerButt Pepper Company (USA), which rates at an average of 1,569,300 Scoville Heat Units (SHU), according to tests conducted by Winthrop University in South Carolina, USA, throughout 2012.
Definition of slack. 1  1 : cessation in movement or flow. 2  2 : a part of something that hangs loose without strain take up the slack of a rope. 3  3 : trousers especially for casual wear âusually used in plural.  4 : a dull season or period.
Princeton's WordNet(5.00 / 1 vote)Rate this definition: 1  slack(noun) dust consisting of a mixture of small coal fragments and coal dust and dirt that sifts out when coal is passed over a sieve. 2  slump, slack, drop-off, falloff, falling off(noun) a noticeable deterioration in performance or quality.