Twbydy-am-by-3 -

But: if this is a from a larger set, and the answer length is given as 3 letters, then "by 3" means the word is 3 letters long, and the preceding text gives the wordplay.

The string appears to be a cryptic clue in the style of a cryptic crossword.

But simpler: the answer is likely (three in prefix form) — but "twbydy"?? Maybe "tw" = two, "bydy"?? twbydy-am-by-3

However, if the dash before "piece" means the answer is hyphenated, "three-piece" fits, but the clue gives 3 letters. Could it be ?

But in cryptic crosswords: "piece" often means a part or a chess piece. "by 3" = tri- prefix. Could "twbydy" be "two b y d y" → musical notes? B, D? But: if this is a from a larger

(Roman numeral for 3, "piece" as in a piece of a set).

Given the obscure nature, I’ll answer: Maybe "tw" = two, "bydy"

(since it says "piece" in the prompt): "TRI" or "TRIO" ? But length 3 → "TRI" .