Descriptive English: a small 'bit' (fragment) of land that is lush and 'green' — the verdant forest-island linked to Dressrosa by an iron bridge. No SBS gloss is on record; the name reads transparently.
New World · first mentioned: Ch. 697 · first appeared:Ch. 705
Profile
Greenbit is first mentioned in Ch. 697 (p. 3) when Trafalgar Law tells the Straw Hats, “Incidentally… I’m planning to head for Greenbit after this.” Named-not-shown; its location and significance (apparently adjacent to Doflamingo’s Dressrosa) are not yet established on-page. aliases:["Green Bit"] to prevent an alias-fork (the VIZ rendering varies).
Key chapters
Ch. 697 — first mention (Law announces his next destination)
Ch. 698 — named again, not shown (Doflamingo announces Greenbit as his next destination)
Ch. 700 — named again, not shown (the Caesar-handover island north of Dressrosa, 3 PM)
Ch. 701 — labeled on Kin’emon’s map: an island north of Dressrosa reached by a long bridge, “can’t be reached by water” (still a map label, not visited)
Ch. 705 — first shown: the dead 200-year iron bridge + the channel ringed by horned fighting fish; the imperiled Caesar hand-off point
Ch. 710 — interior first shown: the wild overgrown jungle (caption “Uninhabited Island North of Dressrosa: Greenbit”); the alliance crosses the fighting-fish strait, finds a wrecked Marine battleship jammed into the far shore (the leaked hand-off site), and discovers the island is secretly inhabited by fast, near-invisible “little people”
Ch. 711 — the underground Tontatta Kingdom beneath the forest is shown (Nico Robin wakes captive there); at the southeast beach the Caesar hand-off is exposed as a trap and Doflamingo mobilizes all units to the spot
Ch. 712 — the alliance (Robin/Franky/Law + the captive Caesar) aborts the hand-off and plans to slip to the port; Doflamingo confronts Law on the beach (“JOKERRR!!”)
Ch. 718 — confirmed to sit above the underground Tontatta Kingdom, with a hidden underground passage running to Dressrosa (surfacing through a staircase under a Dressrosa flower field; pp. 2–3). Site of the Law vs Doflamingo duel; Law orders the Sunny sailed here with the captive Caesar (pp. 15–17).
Ch. 723 — the staging ground for Law vs Doflamingo & Admiral Fujitora; the iron bridge to Dressrosa (Law’s gambit map, p. 16) and the surrounding fighting-fish channel menacing the approaching Sunny (p. 15); a “weird forest” visible through the mist (p. 14).