alight

Concise Oxford English Dictionary © 2008 Oxford University Press:
alight1

▶verb

• 1 (of a bird) descend from the air and settle.

• 2 formal descend from public transport.

• 3 (alight on) chance to notice.

– origin OE ālīhtan, from ā- (as an intensifier) + līhtan ‘descend’ (see light3).

Concise Oxford English Dictionary © 2008 Oxford University Press:
alight2

▶adverb & adjective

• 1 on fire.

• 2 shining brightly.

– origin ME: prob. from the phr. on a light (= lighted) fire.