1 grand Adjective  

(a) large, big (more Infml) object; elle a une ~e voiture she has a large car, she's got a big car (Infml); ~ comme la moitié d'une carte de crédit half the size of a credit card

(b) (in height) tall, big (Infml); high, tall ladder, hill; il est ~ he's tall; elle est plus ~e que moi she's taller than me (slightly Infml), she's taller than I am; grimper une ~e colline to climb a high (or) tall hill
(c) (Infml) big (Infml), grown-up; (neutral) ~e personne grown-up
(d) (fig) grand dinner, reception
(e) (fig) great distance, speed, expense; great weight, effort, danger; loud shout, intense cold, strong wind; train à ~e vitesse high-speed train; voyager à ~e vitesse to travel at high speed; à ~s frais at great expense; à ma ~e surprise to my great surprise; faire ~ bien to do a great deal of good; au ~ jamais never ever; de ~ coeur to be wholehearted; to believe wholeheartedly
(f) (fig) hard, keen worker; c'est un ~ ami he's a great (or) true friend; un ~ fumeur/buveur a heavy smoker/drinker; un ~ champion a great champion, a true champion
(g) (fig) major part; broad daylight; au ~ jour in broad daylight; de ~ matin in the early morning, early in the morning; en ~e partie largely, in the main, for the mostpart

2 grand Adverb

(a) to think, act on a large scale, on a grand scale, big (Infml); en ~ in the main