| 释义 | rid·dle I. \ˈridəl\ noun
 (-s)
 Etymology: Middle English redels, redel, ridel, from Old English rǣdels, rǣdelse opinion, conjecture, riddle; akin to Middle High German rātsel riddle, Old English rǣdan to advise, interpret — more at read
 1.  : a mystifying, misleading, or puzzling question posed as a problem to be solved or guessed often as a game : conundrum, enigma
 2.  : something or someone difficult to understand : a problematical event, situation, or person : mystery
 < the eternal riddle of nominalism and realism — B.N.Cardozo >
 < will help the scientist to solve one of the many riddles of cancer — Waldemar Kaempffert >
 Synonyms: see mystery
 II. verb
 (riddled ; riddled ; riddling \-d(ə)liŋ\ ; riddles)
 transitive verb
 1.  : to find the solution of : explain, interpret
 2.  : to create or set a riddle for : mystify, perplex, puzzle
 intransitive verb
 : to speak in or propound riddles
 III. noun
 (-s)
 Etymology: Middle English riddil, from Old English hriddel, alteration of hrider, hridder — more at certain
 1.  : a coarse sieve: as
 a.  : a sieve for grading potatoes
 b.  : a device for sifting coal
 c.  : a sieve for panning gold
 d.  : a sieve for sand used in a foundry
 e.  : a strainer kept in motion to sift middlings in flour milling
 2. archaic  : a compartmented case or container or its contents; especially  : a 13-bottle case of wine
 3. archaic  : a board set with zigzag pins between which wire is drawn to straighten it
 IV. verb
 (-ed/-ing/-s)
 Etymology: Middle English ridlen, riddlen, from riddil sieve
 transitive verb
 1.  : to separate (as grain from the chaff) with a riddle : pass through or as if through a riddle : screen, sift
 < riddled the coal to grade it by size >
 2.
 a.  : to fill (something or someone) as full of holes as a sieve : puncture often and thoroughly
 < he stood up, riddled them with fire and flopped down again — Dave Richardson >
 < riddled the ship with a broadside >
 < it had become badly riddled by termites — American Guide Series: Louisiana >
 b.  : to spread throughout : permeate
 < the graft that riddles virtually every metropolitan police force — August Heckscher >
 < its lawn riddled with weeds — Bernard Kalb >
 intransitive verb
 : to use a riddle : sift through : penetrate, pierce
 < cold winds riddle through the thin walls >
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