beach·comb·er /ˈbiʧˌkomɚ/
  岸邊巨浪;流浪漢
  beachcomber. [Written also beach-comber or beach comber.] Naut.
  1. A vagrant seaman, usually of low character, who loiters about seaports, particularly on the shores and islands of the Pacific Ocean.
     I was fortunate enough, however, to forgather with a Scotchman who was a beach-comber.    --F. T. Bullen.
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  beachcomber
       n : a vagrant living on a beach