骨くず [hone kuzu] or 'bone scrap(s)' in Japanese.
Final Fantasy XII
Buy: - (sell: 193 gil)
Use: Cypress Pole
Drop: Fideliant, Grave Lord, Lost Soul, Skeleton, Skull Defender, Skull Warrior
Steal: Skeleton, Skull Defender, Skull Warrior
Poach: Lost Soul, Skeleton, Skull Defender, Skull Warrior
Description: This fragment is too small to identify the type of bone it once formed a part of. Some lands prohibit their use outright, others require prior ablution with holy water.
Other: as 'Bone Fragment'
Revenant Wings
Buy: 150 gil (sell: 75 gil)
Shop: Material Shop, chapter 4 onwards
Use: Gaia Rod, Mythril Blade, Storm Lance
Obtain: Maleficent Mayhem Harvest 67%), Fane of Gucuma Qul Sky Pirate Melee (harvest 67%)
Description: Fragment of shattered bone. Douse with holy water before use, or suffer dire consequences
Other: low-grade Small Bone
Other: as 'Bone Chips'
Final Fantasy XIV

Use: Animal Glue, Bone Harpoon, Bone Hora, Bone Ring, Bone Staff, Bronze Dagger, Bronze Gladius, Sheepskin Wristbands
Buy: 216 gil (sell: 36 gil)
Shop: Pimelle (Ul'dah)
Drop: various skeletons and gnats
Gather: mining (sweetspot +4, strike zone 2) Black Brush, Drybone
Type: Bone, Stack: 99
Description: A tiny chip from the bone of some man or beast.
Grimoire of the Rift

Buy: - (sell: 20 gil)
Use: Close Helmet
Reward: Wanted: Shiny Maces (once)
Type: Bone, Rank: —
Description: The fragmented shards of monster bones. Touch them lightly and they will crumble.
Other: as 'Bone Chips'
Final Fantasy Tactics S

Buy: - (sell: 1 gil)
Use: Bell, Bow, Dagger, Fangs, Grand Cannon, Knuckles, Spear, Carapace, Leather Clothing, Magickal Ring
Obtain: bone-type nodes everywhere
Description: A commonplace bone
Category: Item