脈
ミャク, すじ
vein, pulse, hope
JLPT1 G4 S10 F1477
As per ?# as described in
派
(rivulets) +
肉
flesh → *vein*; *blood vessel* (← rivulets concealed in the body) → *pulse* → (faint) *hope* (← faint sensation of a pulse).
[Full Kanji Etymology List]