SletaRussian, Ukrainian Derived from Russian слёта (slyota) or Ukrainian слета (sleta), both meaning meaning "meeting".
SlobodyanUkrainian Means "person who live in a sloboda". A sloboda (слобода) is type of settlement in old Slavic countries that usually was used by cossacks for colonisation. It comes from the word свобода (svoboda) "freedom".
SyezdRussian (Rare), Kazakh (Rare) The last name is a Russian last name derived from съезд (s"yezd) meaning "conference, congress, convention", but it is mostly used in Kazakhstan.
SylgytovmYakut From Yakut сылгы (sylgy), meaning "horse".
TravchukUkrainian Either from Ukrainian трава (trava) "grass" or травень (traven') "May (month)", both ultimately deriving from Old Slavic трѣва (trěva) "grass".
TrávníčekmSlovak From Slovak trávnik, meaning "yard, lawn, grass", likely denoting to a yard worker. Ultimately from Slovak tráva "grass", Old Slavic *трѣва (*trěva) "grass".