maul

v. wound, crush, mutilate; behave crudely; handle roughly or carelessly

n. hammer, sledge-hammer; brawl

A splitting maul (or mall) is a heavy, long-handled hammer used for splitting a piece of wood along its grain. One side of it is identical to a sledge hammer and the other side is an axe.
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Noun
1. a heavy long-handled hammer used to drive stakes or wedges
(synonym) sledge, sledgehammer
(hypernym) hammer
Verb
1. split (wood) with a maul and wedges
(hypernym) cleave, split, rive
(derivation) sledge, sledgehammer
2. injure badly by beating
(synonym) mangle
(hypernym) deface, disfigure, blemish
(entail) mutilate, mar
(derivation) mauler

n. muzzle, part of the body used for eating and communicating; spout, nozzle; rudeness, insolent speech (Informal); opening

v. moan, groan, sigh

n. maul, wound