coin

COIN noun

uk/kɔɪn/ us
B1 [ C ] a flat, usually round, piece of metal used as money

монета
a pound coin  toss a coin
to throw a coin into the air so that it turns over several times, and see which side it lands on, often in order to make a decision

играть в орлянку

coin verb [ T ] uk/kɔɪn/ us
to be the first person who uses a new word or phrase

создавать новое слово или выражение
The Czech playwright, Capek, coin ed the word 'robot'.
 to coin a phrase
something you say before using a common expression

как говорится
Still, to coin a phrase, there is light at the end of the tunnel.