Paleolithic Etymology of : 
SiLLoN
Linguistic references
Semantic fields in Paraklist
In praise of slits and fosses in S1
ShaḤaT ShuwḤah SheʔowL 
CeSS PiT ShiT HoLe TReNCh PuSh aBySS SouL GRooVe SWaLe FoSSe 
aBySSos SiLLoN FoSSe TRaNChe Chier PouSSer âMe 
VeRSus SuLCusVulva or arrow, it always comes down to sex! in S1
TooTh aRRoW MaLe SeX RiSe ThRuST SiNK FeMaLe CaVeRN SLiT HoLy HoLe FLèChe DeNT SeXe DReSSer PLaNTe eNFoNCer MêMe FeMMe SiLLoN CaVeRNe SeiNShin, Samekh, S and Yin-Yang in S1
SeX oPPoSe ShaPe SPiKe VuLVa RouND BReaST WoMB HiDe SiNuous aLTeRNate SLiT SuMMiT SymBoL aMBiVaLent DuaL PoTTeR eXChaNGe TWo ReD BLue HaND FaCe eaCh STaTe DyNaMic LiGhT DaRK MeaN SaMe Thing DiSCoVeR ChaNGe 
Yin-Yang SeXe oPPoSer FoRMe LeTTRe PoiNTe VuLVe RoND CaCher SiNueux aLTeRNer SiLLoN SoMMeT SymBoLe DueL aMBiVaLent PoTeRie éChaNGe DeuX MaiN RouGe BLeu FaCe STaTique DyNaMique LuMiNeux oBSCuR ReCheRChe ChaNGer SeX ShaPe SPiKe VuLVa RouND BReaST WoMB HiDe SiNuous aLTeRNate SLiT SuMMiT SymBoL aMBiVaLent DuaL Yin-Yang SeXe FoRMe LeTTRe PoiNTe VuLVe RoND SeiN CaCher SiNueux aLTeRNer SiLLoN SoMMeT SymBoLe DueL aMBiVaLent uTéRuSSense, upwards, downwards (and vice-versa) in S1
DuaL FoRM FLoWeR oPPoSe SPiRaL DouBLe eGG ShaPe HeaRT aSS SePaRate GRooVe SLiT DueL FoRMe PaPiLLon FLeuR SPiRaLe oPPoSer œuF DouBLe CœuR PaiRe FeSSe SéPaRer SiLLoN FeNte