Scot's cap (6)
(Other definitions for bonnet that I've seen before include "Baby's hat" , "Type of woman's hat" , "Hat - American hood" , "motor mechanics often raise" , "Old-fashioned woman's hat or a hinged cover over car engine" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">scot's cap</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tam that I've seen before include "...-o'-shanter, Scottish cap" , "Scots cap" , "'Scottish cloth cap, in short (3)'" , "Scotsman's cap" , "Television ratings system" .)