Cyclops a touch poorly beginning to suspect bug (14)
I believe the answer is:
staphylococcus
'bug' is the definition.
(thesaurus)
'cyclops a touch poorly beginning to suspect' is the wordplay.
'poorly' indicates anagramming the letters (a poor spelling).
'beginning to' indicates taking the first letters.
The initial letter of 'suspect' is 's'.
'cyclops'+'a'+'touch'='cyclopsatouch'
'cyclopsatouch' is an anagram of 'staphylococcu'.
'staphylococcu'+'s'='STAPHYLOCOCCUS'
(Other definitions for staphylococcus that I've seen before include "something studied in bacteriology" , "Common bacterium" .)