'Full grown' in the Bible

"The lioness may roar, and the lion cub may growl; but even the ivory teeth of the full grown lion are broken.

Full grown lions die when they cannot find prey; that's when the lion cubs are scattered.

May our sons in their youth be like full-grown plants, and our daughters like pillars destined to decorate a palace.

"You'll learn that I am the LORD, when the fatally wounded will be among their idols, around their altars, on every hill, on top of the mountains, under every luxuriant tree, and under all the full-grown foliage every place where they've offered fragrant aromas to all their idols.