
1) Aircraft carrier 2) An aircraft carrier 3) Bygone coif 4) Bygone haircut 5) Certain crewcut 6) Comic strip supervillain 7) Crew cut 8) Crew cut kin 9) Fictional gangster 10) Fictional henchman 11) Haircut 12) Hairstyle 13) Kind of crew cut 14) Kind of haircut, slang 15) Naval vessel, slang 16) Rarely seen haircut nowadays
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https://www.crosswordclues.com/clue/flattop

1) Boat 2) Carrier
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https://www.crosswordclues.com/clue/flattop

- a closely cropped haircut; usually for men
- a large warship that carries planes and has a long flat deck for take-offs and landings
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A flattop is a type of crew cut where the hair on the top of the head is graduated in length from the front hairline back through the crown to form a flat deck, of level, upward sloping or downward sloping inclination.{sfn|Thorpe|1967|p=133-134}{sfn|Trusty|1971|p=110-111} == Styling == When a flattop is viewed from the front, varying degrees of sq...
Found on
http://en.wikipedia.org/wiki/Flattop
[critical assembly] Flattop is a benchmark critical assembly that is used to study the nuclear characteristics of uranium-233, uranium-235, and plutonium-239 in spherical geometries surrounded by a relatively thick natural uranium reflector. Flattop assemblies are used to measure neutron activation and reactivity coefficients. Since the neu...
Found on
http://en.wikipedia.org/wiki/Flattop_(critical_assembly)

an aircraft carrier. · a type of crew cut in which the hair is cropped in a flat plane across the top.
Found on
https://www.infoplease.com/dictionary/flattop
No exact match found.