Big is translated 'grand, grande' in French.
je suis callipyge
Big river ranch is "le ranch de la grande rivière" in French.
Mon crayon est grand et jaune
A major city- the direct translation would be "Ville majeur" I think a better way to say it in French would be to say a "big city" (une grande ville), or a metropolitan area, "Une métropolitaine".
French kids use the expression 'grosse vache' for the English 'big fat cow'.
To say "big sister" in French, you would say "grande sœur."
grand groupe is how you say big group in French.
Very big is said: très grand in french.
A big bell is 'une grosse cloche' in French
a big table is translated 'une grande table' in French
A big dog would be "un grand chien" in French.
Big breasts are 'des gros seins' (familiar/slangish) in French.
c'est grand
big- grande elegant- elegante
je suis callipyge
grandes foules
grande jour