### Clue: It attracts attention to a skirt (4)
### Answer: AHEM 
 ### Explanation: Definition: It attracts attention
  A + HEM(to provide with a border,to skirt).  Strangely, yet another relation exists between "hem" and "skirt" – "to hem and haw" which is derived from the sounds of clearing one's throat and hesitation, is synonymous with "to skirt round (the subject/issue)". 
Answer: An interjection, lengthened from the abovementioned clearing of throat, to attract attention, interrupt, express doubt, etc