the.com/slot

a gap engineered to swallow whatever you feed it, time or coins included

means A narrow opening or designated space into which something fits — whether a coin into a machine, an appointment into a schedule, or a card into a reader.

from From Middle English 'slot,' meaning a hollow or depression, especially the one at the base of the throat — likely from Old French 'esclot.' The 'narrow opening for coins' sense is a much later, industrial development, and the 'allotted time or position' sense (a slot in the schedule) came later still, by metaphor. The gambling 'slot machine' lent the word its hungry reputation in the modern era.

machine math
slot machines pay out around 85-98% over time
old name
called one-armed bandits for the side lever
airport slots
takeoff slots trade for millions between airlines
near miss
machines fake near-wins to keep you spinning
word origin
from Old French esclot, meaning hollow
for instance

liberty bell crack — philadelphia's famous bell developed a 1.5-inch crack in 1835 and has not rung since

strait of malacca — narrow waterway between malaysia and indonesia where 94,000 ships pass annually through a 550-mile channel

panama canal locks — three pairs of chambers in panama that raise and lower ships 85 feet through a 51-mile passage

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