Feeler (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">feeler</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tentacle that I've seen before include "Flexible appendage on some animals" , "Long flexible feeler" , "Octopus's limb" , "Octopus feeler" , "Flexible grasping organ" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">feeler</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that feeler can be written as antenna)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for antenna that I've seen before include "Transmitting aerial" , "Radio aerial" , "Aerial - insect feeler" , "sensitive feeler" , "receiver" .)