Seaport on Puget Sound (6)
I believe the answer is:
tacoma
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">seaport on puget sound</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 tacoma that I've seen before include "Port city in Washington" , "US city" .)