1 definition by Bo Oats

Top Definition
Relationships within crew teams, often happening because of the long periods of time spent between crew members. What constitutes a valid case of Crewcest:

- hooking up and or sexual relations
- talking for a substantial period of time

- mutual open admiting emotional feelings for each other
- going on a date or prom
Girl and boy are seen at regatta holding hands while wearing matching unis.

Bystander: Crewcest strikes again.
by Bo Oats May 23, 2011

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