Coomb

combe pronunciation: variant(s): also coombe or coomb function: noun etymology: middle english coumbe, cumbe, from old english cumb, of celtic origin; akin to welsh cwm valleydate: before 12th century 1 british : a deep narrow valley2 british : a valley or basin on the flank of a hill

たいこ 太古

ancient times.??の　ancient; 《原始の》primitive. ?大昔.

less thanの意味

【コンピュータ】小なり.?less