真的在拉琴的人
最直接的一支：手在琴上，發出聲音。
noun · B2
Someone who plays the violin, especially someone who plays folk, country or dance music rather than classical music.
提琴手（民謠場合）
核心畫面
One way to hold this word: a pair of hands busy on a fiddle — fingers moving in small, quick, constant adjustments, and one arm held up against the body. Every fiddler in English comes from part of that picture. From the sound, the musician. From the restless fingers, the person who keeps adjusting, and then the person who quietly adjusts numbers. From the raised arm, a crab on the mud that looks as if it is holding a violin.
fiddler 可以想成一雙在琴上忙個不停的手：手指又快又小地一直調整，一隻手臂還舉著夾在身前。這個字的每一種用法，…更多收起
fiddler 可以想成一雙在琴上忙個不停的手：手指又快又小地一直調整，一隻手臂還舉著夾在身前。這個字的每一種用法，都取自這張圖的一部分。取聲音，就是拉琴的人。取那雙停不下來的手指，就是一直在微調的人，再往前一步，就是偷偷調整數字的人。取那隻舉起來的手臂，就是泥灘上那隻看起來像在夾琴的螃蟹。From the word’s history
The packet's Wiktionary etymology gives fiddler as fiddle + -er, through Middle English fithelere and Old English fiþelere, so the word starts as 'the one working the fiddle'. It also records that the crab is named from the way the male holds his enlarged claw, like a musician holding a fiddle.
封包裡的字源說，fiddler 是 fiddle 加上 -er，經中古英語 fithelere、古英語 fiþelere 而來，字面就是「弄那把琴的人」。同一份資料也記下螃蟹得名的理由：公蟹舉著大螯的樣子，像音樂家夾著琴。所以這個字後來的分支，都還能回到那雙手上。
Wiktionary entry supplied in packet (kaikki:3f6f69a190036ae4:588132884) — 'From Middle English fithelere, from Old English fiþelere ... By surface analysis, fiddl(e) + -er', and the note on the crab's raised claw.
Three branches
手一直在弄的人
取那雙停不下來的手指：先是不停微調，再延伸到偷偷改不該改的數字。
noun · C1
Someone who keeps making small adjustments to something, either to get it exactly right or because they cannot leave things alone.
愛擺弄的人
因為姿勢像拉琴而得名
取那隻舉在身前的手臂：名字來自形狀，跟音樂本身沒有關係。
noun · C1
A small crab that digs holes on muddy shores; the male has one claw far bigger than the other and holds it up in front of him, a little like someone holding a violin.
招潮蟹