Definiciones
1.AdjectiveFirmly or securely fixed in place; stable. .mw-parser-output .defdate{font-size:smaller}"That rope is dangerously loose. Make it fast!"
2.AdjectiveFirm against attack; fortified by nature or art; impregnable; strong.
3.AdjectiveSteadfast, with unwavering feeling. (Now mostly in set phrases like fast friend(s).)
4.AdjectiveMoving with great speed, or capable of doing so; swift, rapid; light."I am going to buy a fast car.; Plutonium-240 has a much higher fission cross-section for fast neutrons than for thermal neutrons."
5.AdjectiveHaving a kinetic energy between 1 million and 20 million electron volts; often used to describe the energy state of free neutrons at the moment of their release by a nuclear fission or nuclear fusion reaction (i.e., before the neutrons have been slowed down by anything)."Plutonium-240 has a much higher fission cross-section for fast neutrons than for thermal neutrons."
6.AdjectiveOf a place, characterised by business, hustle and bustle, etc.
7.AdjectiveCausing unusual rapidity of play or action."a fast racket, or tennis court; a fast track; a fast billiard table; a fast dance floor"
8.AdjectiveAble to transfer data in a short period of time.
9.AdjectiveDeep or sound (of sleep); fast asleep (of people).
10.AdjectiveNot running or fading when subjected to detrimental conditions such as wetness or intense light; permanent."All the washing has come out pink. That red tee-shirt was not fast."
11.AdjectiveTenacious; retentive.
12.AdjectiveHaving an extravagant lifestyle or immoral habits."a fast woman"
13.AdjectiveUncharacteristically mature or promiscuous for one's age.
14.AdjectiveAhead of the correct time or schedule."There must be something wrong with the hall clock. It is always fast."
15.AdjectiveMore sensitive to light than average.
16.NounA train that calls at only some stations it passes between its origin and destination, typically just the principal stations.
17.InterjectionEllipsis of stand fast, a warning not to pass between the arrow and the target.
18.AdverbIn a firm or secure manner, securely; in such a way as not to be moved; safe, sound ."Hold this rope as fast as you can."
19.AdverbDeeply or soundly ."The princess was sleeping fast, and her servants were fast asleep too."
20.AdverbImmediately following in place or time; close, very near ."The horsemen came fast on our heels.; Fast by the sturdy batsman the ball unheeded sped. / That ain't my style, said Casey. Strike one, the umpire said."
21.AdverbQuickly, with great speed; within a short time ."Do it as fast as you can."
22.AdverbAhead of the correct time or schedule."I think my watch is running fast."
23.VerbTo practice religious abstinence, especially from food.
24.VerbTo reduce or limit one's nutrition intake for medical or health reasons, to diet.
25.VerbTo cause (a person or animal) to abstain, especially from eating.
26.NounThe act or practice of fasting, religious abstinence from food.
27.NounAny of the fasting periods in the liturgical year.