古英語のsyll, threshold, sillから。原語ゲルマン語の*suli, post, boardから、PIE *swel, post, boardが語源で、語源的にはsylvan, forestと同じ。
英語の語源
sill
sill: [OE] Sill originally denoted the ‘foundation of a wall’. Not until the 15th century was it used for the ‘base of a window-frame’. It is related to German schwelle ‘threshold’ and possibly also to English sole ‘underside of the foot’.
sill (n.)
Old English syll "beam, threshold, large timber serving as a foundation of a wall," from Proto-Germanic *suljo (cognates: Old Norse svill, Swedish syll, Danish syld "framework of a building," Middle Low German sull, Old High German swelli, German Schwelle "sill"), perhaps from PIE root *swel- (3) "post, board" (cognates: Greek selma "beam"). Meaning "lower horizontal part of a window opening" is recorded from early 15c.
例文
1. A thin,glistening thread of moisture ran along the rough concrete sill .
ざらざらしたセメント窓台に細い発光透かしがある。
2.The Royal Airforce sill remained dangerously short of bombers.
英国王立空軍は依然として爆撃機不足のきわめて危険な状況を脱していない。
3.The blind was drawn,but I found a rift at the sill .
カーテンを引いたが、窓の台に隙間を見つけた。
4.Whitlock was perched on the sill of the room 's only window.