on thin ice
Wood that forms (in a woody plant) in response to gravity, which differs from normal wood in ways that give it additional strength so that a branch (etc) can resist bending downward or breaking.
(idiomatic) In a dangerous, hazardous, or delicate situation; at risk.
(UK politics) The fact of the United Kingdom remaining in the European Union.
(sports) The act of spinning 540 degrees in the air, making 1½ turns.
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