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Webster 1913 Edition

(k?ks′k?mˊl?)

Adj.

like a coxcomb.

[Obs.]

“You coxcombly ass, you!”

Beau. & Fl.

Adj.

Like a coxcomb. [Not used.]

coxcombly ‎(comparative more coxcombly, superlative most coxcombly)

(obsolete) Like a coxcomb.
You coxcombly ass, you! — Beaumont and Fletcher.