Meaning

• The top of the head; the skull.

• The part of the head where the hair grows from, or used to grow from.

• A part of the skin of the head, with the hair attached, formerly cut or torn off from an enemy by warriors in some cultures as a token of victory.

  "Some tribes used to collect scalps to prove how many of the enemy they had killed in battle."

• The skin of the head of a stag with the horns attached.

• A victory, especially at the expense of someone else.

• A bed or stratum of shellfish.

• The top; the summit.

Meaning

• To remove the scalp (part of the head from where the hair grows), by brutal act or accident.

• To resell, especially tickets, usually for an inflated price, often illegally.

  "Tickets were being scalped for $300."

• On an open outcry exchange trading floor, to buy and sell rapidly for one's own account, aiming to buy from a seller and a little later sell to a buyer, making a small profit from the difference (roughly the amount of the bid/offer spread, or less).

• To screen or sieve ore before further processing.

  "scalped ore"

• To remove the skin of.

• To remove the grass from.

• To destroy the political influence of.

• (milling) To brush the hairs or fuzz from (wheat grains, etc.) in the process of high milling.