傍
ボウ, かたわ.ら, わき, おか, はた, そば, び
bystander, side, besides, while, nearby, 3rd person
JLPT1 G7 S12 F1660
As per
旁
# (both sides of the body) +
人
person → both sides of a person → *side* → *besides*.
[Full Kanji Etymology List]