Restricts (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">restricts</span>' is the definition.<br/ ><span class="explanation-format__explanation">('curb' can be a synonym of 'restrict')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for curbs that I've seen before include "Keeps in check" , "Restrains" , "Place restrictions on" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">restricts</span>' is the definition.<br/ ><span class="explanation-format__explanation">('limit' can be a synonym of 'restrict')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for limits that I've seen before include "Boundaries or furthest reaches" , "Frontiers" , "Boundaries, confines" , "Bounds beyond which one cannot go" , "'Boundaries, demarcation lines (6)'" .)