The Collaborative International Dictionary
Purser's name
Purser \Purs"er\, n. [See Purse, and cf. Bursar.]
(Naut.) A commissioned officer in the navy who had charge of the provisions, clothing, and public moneys on shipboard; -- now called paymaster.
A clerk on steam passenger vessels whose duty it is to keep the accounts of the vessels, such as the receipt of freight, tickets, etc.
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Colloquially, any paymaster or cashier.
Purser's name (Naut.), a false name. [Slang]
Wiktionary
purser's name
n. (context nautical slang English) assumed name