Bone House Collar O, is designed to include the bones that sit at the base of the human neck. They also include the collar bone. Overall, this is a nice collection of bones, that results in a nice design for a Bone House.
Possible Meanings:
Stability and/or Support: because the Head rests on the Neck, rest on the shoulders.
Indifference: "Gave him the cold shoulder".
Uncertainty: "I don't know". Because Shoulders can shrug.
Contribution: As in "Standing on the shoulders of Giants"
Burdens: "She carries the weight of the world on her shoulders", like a backpack.
Sympathy/ Empathy/ Shared Burdens/ Emotional Support: "A shoulder to cry on"
BreakThrough: "Shoulder through it"
Arrogance: "Chip on his Shoulder"
Risky: "Stuck his neck out"
Immersion/ Commited/ Stuck: "Neck Deep"