Lots surprisingly visiting that woman in sheriff's case? (7)
I believe the answer is:
holster
'sheriff's case?' is the definition.
'holster' can be an answer for 'case?' (I've seen this before). I'm not certain of the 'sheriff's' bit.
'lots surprisingly visiting that woman' is the wordplay.
'surprisingly' indicates anagramming the letters (a surprising ordering of the letters).
'visiting' is an insertion indicator.
'that woman' becomes 'her' ('her' refers to a woman).
'lots' is an anagram of 'olst'.
'olst' placed inside 'her' is 'HOLSTER'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for holster that I've seen before include "Sheath for a handgun" , "Where piece goes" , "case for weapons" , "Pistol sheath" , "Gun case" .)