be flanked by / vault off

Yet the huge man at the head of the column, flanked by^[각주:1] two knights in the snow-white cloaks of the Kingsguard, seemed almost a stranger to Ned ... until he vaulted off^[각주:2] the back of his warhorse with a familiar roar, and crushed^[각주:3] him in a bone-crunching hug^[각주:4].

1. flank ; 1. be flanked by sb/sth ~이 옆[측면]에 있다 [본문으로]
2. vault ; [동사] (손이나 장대로 몸을 지탱하며) 뛰어넘다 ;; 흐름상 "말에서 뛰어내리다" 정도로 이해 [본문으로]
3. crush ; 격하게 껴안았다는 표현을 두고 "crush" 라는 단어를 쓴것을 확인 [본문으로]
4. bone-crunching ; (idiomatic) Very violent or hard. [본문으로]