crenel/ˈkɹɛnəl/EtymologyFrom Old French crenel ( > modern French créneau), diminutive of cren (“notch”).crenel means The space between merlons in a crenelated battlement. Lexicurio rates it Rare gem — a strength score of 84 out of 100.nounThe space between merlons in a crenelated battlement.“Near-synonym: embrasure (sometimes hypernymous technically)”