I fell asleep against a pillar.是什么意思？

I fell asleep against a pillar.

我靠在一根柱子上睡着了。

fell

vt. 砍倒，打倒；n. 兽皮，一季的木材采伐量；adj. 残忍的，凶恶的；v. 掉下，摔倒，变坏(fall的过去式)；

例句
One afternoon, I grew bored and actually fell asleep for a few minutes...
一天下午，我觉得有些无聊，还真的睡着了一小会儿。

asleep

adj. 睡着的，休眠的，麻木的，已死的；adv. 熟睡地，处于麻木不仁的状态，长眠；

例句
One afternoon, I grew bored and actually fell asleep for a few minutes...
一天下午，我觉得有些无聊，还真的睡着了一小会儿。

against

prep. 反对，对…不利，紧靠，以防；

例句
His hand brushed against hers; it could have been either accidental or deliberate.
就在有意无意间，他的手轻轻拂过她的手。

pillar

n. 柱，台柱，顶梁柱，墩，柱脚，（组织、制度、信仰等的）核心；

例句
We dodged behind a pillar out of sight of the tourists.
我们躲到柱子后面，避开了观光者的视线。