Water tower?
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">water tower?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tugboat that I've seen before include "Vessel towing larger vessels" , "Ship pulling a larger one" , "Vessel drawing" , "Powerful vessel used to pull larger ones" , "Harbour craft" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">water tower?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tug that I've seen before include "Haul" , "Pull hard; boat" , "draw with some effort" , "Pull at, or a boat that pulls" , "Towboat" .)