Act prematurely

• Four things represented visually in this puzzle's grid
• Henry dined, consuming chicken not thoroughly prepared

Wiktionary Word definitions in Wiktionary
vb. (en-past of: halfcock )

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Halfcock \Half"cock`\ (-k[o^]k`), v. t. [imp. & p. p. Halfcocked (-k[o^]kt); p. pr. & vb. n. Halfcocking .] To set the cock of (a firearm) at the first notch. To go off half-cocked , To go off halfcocked . To be discharged prematurely, or with the trigger ...

Wikipedia Word definitions in Wikipedia
Halfcocked (also known as Half Cocked , Halfc*cked or Half-Cocked ) was an American hard rock band. Influenced by 1970s hard rock and punk rock, along with 1980s glam metal, they started out in Boston in 1997 and signed with independent label Curve of the ...