All 4 Uses

down payment
in
Happy, Happy, Happy ... Duck Commander
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Fortunately, my parents were making plans to return to Louisiana from Arizona, and Pa had enough money for a down payment on a small place for retirement.†
p. 95.1 *

down payment = a partial payment made at the time of purchase
My parents' dilemma was that while they could make a down payment on any retirement home they wanted, they weren't sure how they would maintain it once they grew older.†
p. 95.2
Kay and I needed a down payment, and Pa and Granny needed to eliminate their worries about monthly payments and long-term maintenance.†
p. 95.6
Pa and Granny used their savings for the down payment, and Kay and I agreed to make monthly payments and maintain the property.†
p. 95.8

Definitions:

(1) (down payment)
a partial payment made at the time of purchase (the rest to be paid later)
(2) (meaning too rare to warrant focus)