fast

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adjective Acting, moving, or capable of acting or moving quickly; swift.
• adjective Accomplished in relatively little time.
• adjective Acquired quickly with little effort and sometimes unscrupulously.
• adjective Quick to understand or learn; mentally agile.
• adjective Indicating a time somewhat ahead of the actual time.
• adjective Allowing rapid movement or action.
• adjective Designed for or compatible with a short exposure time.
• adjective Disposed to dissipation; wild.
• adjective Flouting conventional moral standards; sexually promiscuous.
• adjective Resistant, as to destruction or fading.
• adjective Firmly fixed or fastened.
• adjective Fixed firmly in place; secure.
• adjective Firm in loyalty: synonym: faithful.
• adjective Lasting; permanent.
• adjective Deep; sound.
• adverb In a secure manner; tightly.
• adverb To a sound degree; deeply.
• adverb In a rapid manner; quickly.
• adverb In quick succession.
• adverb Ahead of the correct or expected time.
• adverb In a dissipated, immoderate way.
• adverb Archaic Close by; near.
• intransitive verb To abstain from food.
• intransitive verb To eat very little or abstain from certain foods, especially as a religious discipline.
• noun The act or practice of abstaining from or eating very little food.
• noun A period of such abstention or self-denial.

from The Century Dictionary.

• To make fast; fix; fasten.
• Specifically To join in marriage; marry.
• So as to be fixed or firm; so as to be firmly fixed in its place or in a desired position; firmly; immovably: as, the door sticks fast.
• In archery, used elliptically for stand fast, or some similar injunction, in cautioning a person against passing between the shooter and the target, and directing him to stand fast, or remain where he is.
• Strongly; vehemently; greatly; hard.
• Tenaciously; durably; permanently.
• Eagerly.
• Soundly; closely; deeply.
• Close; near: as, fast by; fast beside. See below.
• To hasten.
• Swift; quick in motion; rapid; that moves, advances, or acts with celerity or speed: as, a fast horse; a fast cruiser; a fast printing-press.
• Done or accomplished with celerity; speedily performed; occupying comparatively little time: as, a fast passage or journey; a fast race; fast work.
• Being in advance of a standard; too far ahead: used of timepieces and reckonings of time: as, the clock or watch is fast, or ten minutes fast; your time is fast.
• Furnishing or concerned with rapid transportation: as, a fast train; a fast-freight line; a fast route; a fast station.
• Eager in the pursuit of pleasure or frivolity; devoted to pleasure and gayety; dissipated: as, a fast liver; a fast man; a fast life.
• To abstain from food beyond the usual time; omit to take nourishment: go hungry.
• To abstain from food, or from particular kinds of food, voluntarily, for the mortification of the body, as a religious duty. See fast, n., and fast-day.
• Swiftly; rapidly; quickly; with quick motion or in rapid succession: as, to run fast; to move fast through the water, as a ship; the work goes on fast; it rains fast; the blows fell thick and fast.
• Firmly fixed in place; immovable.
• Strong against attack; fortified.
• Fixed in such a way as to prevent detachment, separation, removal, or escape; tight; secure; close; not loose nor easily detachable: as, take a fast hold; make fast the door; make fast a rope.
• Firm in adherence; steadfast; faithful.