Twbydy-am-by-3

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

If the answer is just ? "twbydy" = two by two = square, "am" = morning = A.M., "by 3" = ×3? Not fitting.

Given typical puzzle answer lengths, is a clue for "AM" with something? No. twbydy-am-by-3

Given the cryptic style, I suspect ; "am" = morning = "AM"; "by" = next to; "3" = three letters; total maybe "FOUR AM" → anagram?

But the simplest interpretation: = two-by-two = 4; "am" = AM; "by 3" = next to 3 → "4AM beside 3" → puzzle answer "TRI" (three) as the piece. (Roman numeral for 3, "piece" as in a piece of a set)

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?

However, if the dash before "piece" means the answer is hyphenated, "three-piece" fits, but the clue gives 3 letters. Could it be ? Not fitting

Given typical cryptic answers: I’ll go with (from tri = three, "by 3" = times three, "am" = "I am" = "I" in Latin? No).