A Midwesterner, Will Hays, Jr., who is proud of his knowledge of post-Civil-War history, tells me the following origin of shot , as in shotglass , absent from  Gunning for the English Language :
( ( ( ( ( ( A Midwesterner ) , ) ( Will Hays ) ) , ) ( ( Jr. , ) ( who ( ( ( ( ( is ( proud ( of ( ( his knowledge ) ( of ( post-Civil-War history ) ) ) ) ) ) , ) ( ( tells me ) ( ( the ( following origin ) ) ( of shot ) ) ) ) , ) ( as ( in ( ( shotglass , ) ( absent ( from ( Gunning ( for ( the ( English Language ) ) ) ) ) ) ) ) ) ) ) ) ) : )
(ROOT (NP (NP (NP (DT A) (NN Midwesterner)) (, ,) (NP (NNP Will) (NNP Hays)) (, ,) (NP (NP (NNP Jr.)) (, ,) (SBAR (WHNP (WP who)) (S (VP (VP (VBZ is) (ADJP (JJ proud) (PP (IN of) (NP (NP (PRP$ his) (NN knowledge)) (PP (IN of) (NP (JJ post-Civil-War) (NN history))))))) (, ,) (VP (VBZ tells) (NP (PRP me)) (NP (NP (DT the) (JJ following) (NN origin)) (PP (IN of) (NP (NN shot))))) (, ,) (PP (IN as) (IN in) (NP (NP (NNS shotglass)) (, ,) (ADJP (JJ absent) (PP (IN from) (S (VP (VBG Gunning) (PP (IN for) (NP (DT the) (NNP English) (NNP Language)))))))))))))) (: :)))
I asked Will Hays Jr. if he knew the etymology of the word "shotlgass", but he did not.
( ( ( ( ( I ( ( asked ( Will ( Hays Jr. ) ) ) ( if ( he ( knew ( ( the etymology ) ( of ( the ( word ( `` ( shotlgass '' ) ) ) ) ) ) ) ) ) ) ) , ) but ) ( he ( did not ) ) ) . )
(ROOT (S (S (NP (PRP I)) (VP (VBD asked) (NP (NNP Will) (NNP Hays) (NNP Jr.)) (SBAR (IN if) (S (NP (PRP he)) (VP (VBD knew) (NP (NP (DT the) (NN etymology)) (PP (IN of) (NP (DT the) (NN word) (`` ``) (NN shotlgass) ('' ''))))))))) (, ,) (CC but) (S (NP (PRP he)) (VP (VBD did) (RB not))) (. .)))