What is the meaning of Wad?

An amorphous, compact mass.

A substantial pile (normally of money).

A soft plug or seal, particularly as used between the powder and pellets in a shotgun cartridge, or earlier on the charge of a muzzleloader or cannon.

A sandwich.

An ejaculation of semen.

To crumple or crush into a compact, amorphous shape or ball.

To wager.

To insert or force a wad into.

To stuff or line with some soft substance, or wadding, like cotton.

Plumbago, graphite.

Any black manganese oxide or hydroxide mineral rich rock in the oxidized zone of various ore deposits.

wadeable, tidal mud flat

ward

go

woad

wisp

wad (manganese ore)

genitive plural of wada

would

pledge, security

Source: wiktionary.org