The Collaborative International Dictionary of English v.0.48:
Quicken \Quick"en\, v. t. [imp. & p. p. quickened; p. pr. &
vb. n. Quickening.] [AS. cwician. See Quick, a.]
1. To make alive; to vivify; to revive or resuscitate, as
from death or an inanimate state; hence, to excite; to,
stimulate; to incite.
The mistress which I serve quickens what's dead.
Like a fruitful garden without an hedge, that
quickens the appetite to enjoy so tempting a prize.
2. To make lively, active, or sprightly; to impart additional
energy to; to stimulate; to make quick or rapid; to
hasten; to accelerate; as, to quicken one's steps or
thoughts; to quicken one's departure or speed.
3. (Shipbuilding) To shorten the radius of (a curve); to make
(a curve) sharper; as, to quicken the sheer, that is, to
make its curve more pronounced.
Syn: To revive; resuscitate; animate; reinvigorate; vivify;
refresh; stimulate; sharpen; incite; hasten; accelerate;
expedite; dispatch; speed.