Am hemmed in by a mob dancing an exotic dance (5)
I believe the answer is:
mambo
'an exotic dance' is the definition.
'mambo' can be an answer for 'dance' (I've seen this before). I'm not certain of the 'an exotic' bit.
'am hemmed in by a mob dancing' is the wordplay.
'hemmed in by' indicates putting letters inside.
'dancing' is an anagram indicator.
'mob' anagrammed gives 'mbo'.
'am' put into 'mbo' is 'MAMBO'.
Can you help me to learn more?
(Other definitions for mambo that I've seen before include "voodoo priestess" , "Latin American dance of Haitian origin" , "Dance derived from voodoo rituals" , "voodoo woman" , "Quick Caribbean dance" .)