словоерс

From the words «сло́во ― еръ ― съ» (“slóvo ― jer ― s”) from a rote memorization exercise in school spelling classes; сло́во (slóvo) and ер (jer) were the old names of the Cyrillic letters с and ъ respectively. Compare to the English ampersand.

• IPA^(key): [sləvɐˈjers]

словое́рс • (slovojérs) m inan (genitive словое́рса, nominative plural словое́рсы, genitive plural словое́рсов)

1. (obsolete) "slovoyers", ironical term for the honorific Russian suffix -с (-s) (an abbreviated form of су́дарь (súdarʹ), or sir) that was formerly used to emphasize the speaker’s politeness or servility before a person of higher social status.

   ...це́лую жизнь не говори́л словое́рсами, вдруг упа́л и встал с словое́рсами. ― ...céluju žiznʹ ne govoríl slovojérsami, vdrug upál i vstal s slovojérsami. ― I didn’t use the word ‘sir’ all my life, but as soon as I sank into low water I began to say ‘sir.’ — Fyodor Dostoevsky, "The Brothers Karamazov"

• словоер (slovojer)
• словоерик (slovojerik)