Drop

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Related to dropping off: sort out, take after, take hold, lined up, pointed out

Drop

Refers to over-the-counter trading. Remove from OTC trading list; hence, no longer making a market in a security.

Drop

To remove a security from a list of securities for which a dealer serves as a counterparty in the over-the-counter market.
References in classic literature ?
At the distance it looked like an ant-hill, and as I was dropping off to sleep I fell to wondering what it could be.
Just as I was dropping off to sleep I heard Umbopa remark to himself in Zulu--
He did not put it up, however, and she thought that he was dropping off to sleep.