v (transitive) To seize something and hold it firmly.
v (intransitive) To wrestle or tussle.
v (figuratively, with with) To ponder and intensely evaluate a problem; to struggle to deal with.
n A close hand-to-hand struggle.
n The act of grappling. (uncountable)
n (nautical) A device consisting of iron claws, attached to the end of a rope, used for grasping and holding an enemy ship prior to boarding; a grappling iron.
n (nautical) A grapnel (“type of anchor”).
v (transitive) To fasten, as with a grapple; (by extension) to fix; to join indissolubly.
v (transitive, intransitive) To climb (whether by means of a grapple and rope, or by hand, etc).
v (intransitive) To use a grapple (for example to attempt to find, hook, and raise a net or cable).
v (transitive, intransitive) To hook and raise with a grapple.
n (marketing) A combination of grape and apple flavors.