For an aspiration, a syringe is attached to the needle to collect a small amount of marrow. For a bone marrow biopsy, a special needle is used that allows the collection of a solid core (a cylindrical sample) of marrow.
Lottery wheeling. Lottery wheeling (also known as lottery system, lottery wheel, lottery wheeling system) is used by individual players and syndicates to distribute a subset of the possible lottery numbers across multiple tickets to ensure that at least one of these tickets will contain a winning combination if several draws are in this subset.
potter's wheel (potter's wheels plural ) A potter's wheel is a piece of equipment with a flat disc which spins round, on which a potter puts soft clay in order to shape it into a pot. n-count Translation English Cobuild Collins Dictionary