neck up
Verb
Meaning
neck up (third-person singular simple present necks up, present participle necking up, simple past and past participle necked up)
(firearms) to increase the size of a cartridge's chamber and calibre.
Examples
Football is a game played with arms, legs and shoulders but mostly from the neck up.
I never practiced a fretless ever, because the strings eat the neck up. So I would only play it on gigs.
If we should have to fight, we should be prepared to so so from the neck up instead of from the neck down.
I may be paralyzed from the waist down, but unlike Gray Davis, I'm not paralyzed from the neck up.