<p><b>3.</b> <fld>(Mining.)</fld> <def>One of the rough pillars of stone or coal left to support the roof of a mine.</def>
<h1>Cog</h1> <Xpage=273>
<hw>Cog</hw>, <tt>v. t.</tt> <def>To furnish with a cog or cogs.</def>
<cs><col>Cogged breath sound</col> <fld>(Auscultation)</fld>, <cd>a form of interrupted respiration, in which the interruptions are very even, three or four to each inspiration.</cd></cs>
<i>Quain.</i>
<h1>Cog</h1> <Xpage=273>
<hw>Cog</hw>, <tt>n.</tt> <ety>[OE. <ets>cogge</ets>; cf. D. <ets>kog</ets>, Icel. <ets>kuggr</ets> Cf. <er>Cock</er> a boat.]</ety> <def>A small fishing boat.</def>
<i>Ham. Nav. Encyc.</i>
<h1>Cogency</h1> <Xpage=273>
<hw>Co"gen*cy</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[See <er>Cogent</er>.]</ety> <def>The quality of being cogent; power of compelling conviction; conclusiveness; force.</def>
<blockquote>An antecedent argument of extreme <b>cogency</b>. <i>J. H. Newman.</i></blockquote>
<h1>Cogenial</h1> <Xpage=273>
<hw>Co*ge"ni*al</hw> <tt>(?)</tt>, <tt>a.</tt> <def>Congenial.</def> <mark>[Obs.]</mark>
<h1>Cogent</h1> <Xpage=273>
<hw>Co"gent</hw> <tt>(?)</tt>, <tt>a.</tt> <ety>[L. <ets>cogens</ets>, p. pr. of <ets>cogere</ets> to drive together, to force; <ets>co-</ets> + agere to drive. See <er>Agent</er>, <tt>a.</tt>, and cf. <er>Coact</er> to force, <er>Coagulate</er>, <ets>p</ets>. <tt>a.</tt>]</ety> <p><b>1.</b> <def>Compelling, in a physical sense; powerful.</def> <mark>[Obs.]</mark>
<blockquote>The <b>cogent</b> force of nature. <i>Prior.</i></blockquote>
<p><b>2.</b> <def>Having the power to compel conviction or move the will; constraining; conclusive; forcible; powerful; not easily reasisted.</def>
<blockquote>No better nor more <b>cogent</b> reason. <i>Dr. H. More.</i></blockquote>
<blockquote>Proofs of the most <b>cogent</b> description. <i>Tyndall.</i></blockquote>
<blockquote>The tongue whose strains were <b>cogent</b> as commands, Revered at home, and felt in foreign lands. <i>Cowper.</i></blockquote>
<syn>Syn. -- Forcible; powerful; potent; urgent; strong; persuasive; convincing; conclusive; influential.</syn>
<h1>Cogently</h1> <Xpage=273>
<hw>Co"gent*ly</hw>, <tt>adv.</tt> <def>In a cogent manner; forcibly; convincigly; conclusively.</def>
<i>Locke.</i>
<h1>Cogger</h1> <Xpage=273>
<hw>Cog"ger</hw> <tt>(?)</tt>, <tt>n.</tt> <ety>[From <er>Cog</er> to wheedle.]</ety> <def>A flatterer or deceiver; a sharper.</def>
<h1>Coggery</h1> <Xpage=273>
<hw>Cog"ger*y</hw>, <tt>n.</tt> <def>Trick; deception.</def>
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