助
ジョ, たす.ける, たす.かる, す.ける, すけ
help, rescue, assist
JLPT3 G3 S7 F397
As per
且
# (pile) +
力
power/energy → supplementary power that assists in piling → *help*; *assistance* → *save*; *rescue*.
[Full Kanji Etymology List]