Slug-it-out

verb (used with object), slugged, slugging.
1.
to strike heavily; hit hard, especially with the fist.
2.
to hit or drive (a baseball) very hard or a great distance.
verb (used without object), slugged, slugging.
3.
to hit or be capable of hitting hard.
4.
to trudge, fight, or push onward, as against obstacles or through mud or snow:
The infantry slugged up the hill and dug in.
noun
5.
a hard blow or hit, especially with a fist or baseball bat.
Idioms
6.
slug it out,

to fight, especially with fists, until a decisive victory has been achieved.
to succeed or survive by constant and intense struggle.

noun
1.
any of various terrestrial gastropod molluscs of the genera Limax, Arion, etc, in which the body is elongated and the shell is absent or very much reduced Compare sea slug related adjective limacine
2.
any of various other invertebrates having a soft slimy body, esp the larvae of certain sawflies
3.
(informal, mainly US & Canadian) a slow-moving or lazy person or animal
noun
1.
an fps unit of mass; the mass that will acquire an acceleration of 1 foot per second per second when acted upon by a force of 1 pound. 1 slug is approximately equal to 32.17 pounds
2.
(metallurgy) a metal blank from which small forgings are worked
3.
a bullet or pellet larger than a pellet of buckshot
4.
(mainly US & Canadian) a metal token for use in slot machines, etc
5.
(printing)

a thick strip of type metal that is less than type-high and is used for spacing
a similar strip carrying a type-high letter, used as a temporary mark by compositors
a metal strip containing a line of characters as produced by a linecaster

6.
a draught of a drink, esp an alcoholic one
7.
a magnetic core that is screwed into or out of an inductance coil to adjust the tuning of a radio frequency amplifier
verb slugs, slugging, slugged
1.
to hit very hard and solidly, as in boxing
2.
(intransitive) (US & Canadian) to plod as if through snow
3.
(transitive) (Austral & NZ, informal) to charge (someone) an exorbitant price
4.
(informal) slug it out, to fight, compete, or struggle with fortitude
noun
5.
an act of slugging; heavy blow
6.
(Austral & NZ, informal) an exorbitant charge or price
sludd
sluff