Pro (3)
(Other definitions for semi that I've seen before include "place" , "One house of pair" , "A whole house (or half?)" , "Articulated lorry (US)" , "eg Half a house" .)
(Other definitions for ipad that I've seen before include "Small personal computer" , "Tablet computer from Apple" .)
(Other definitions for bono that I've seen before include "U2 frontman" , "U2's main singer and lyricist" , "Famous singer in famous band" , "Pro . . . . publico - for the common good" , "U2's star vocalist" .)
(Other definitions for rata that I've seen before include "tree in New Zealand" , "Pro ..., proportionately" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pro</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for for that I've seen before include "Pro" , "On behalf of" , "In support of" , "Favouring" , "Approving" .)
(Another definition for tem that I've seen is " 'Pro ..., for the time being (3)'".)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pro</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ace that I've seen before include "Unreturnable serve" , "first-class" , "Player who excels" , "Brilliant" , "Tennis serve that the receiver can't reach" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pro</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 expert that I've seen before include "Highly skilled or knowledgeable person" , "Proficient and skilful" , "Master" , "Masterly" , "Specialist, pundit" .)