origin; source; basis; base; cause; (raw) material; ingredient
scabbard; sheath; cap (on a brush, pen, etc.); case; margin (between two prices); spread
to fit into (a box, frame, category, etc.); to be contained within; to settle down (into); to be installed (in one's rightful place); to settle into (one's position); to take up (a post); to be delivered