bosom

noun
(somewhat obsolete) The breast or chest of a human (or sometimes of another animal).The seat of one's inner thoughts, feelings etc.; one's secret feelings; desire.The protected interior or inner part of something; the area enclosed as by an embrace.The part of a dress etc. covering the chest; a neckline.A woman's breast(s).Any thing or place resembling the breast; a supporting surface; an inner recess; the interior.A depression round the eye of a millstone.

verb
To enclose or carry in the bosom; to keep with care; to take to heart; to cherish.To conceal; to hide from view; to embosom.To belly; to billow, swell or bulge.To belly; to cause to billow, swell or bulge.

adjective
In a very close relationship.