point of sale: in an establishment that sells goods or services, the location at which payment for goods is made.

sail: the power harnessed by a sail or sails, or the use of this power for travel or transport.

point of sail: the location at which a sail harnesses power.
"Let's go to a 'point of sail'." - says a pirate
by Pseudonymthewild@gmail.com February 9, 2013
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