(1):

(a.) Bending low, exhibiting or expressing deep humility; lowly; submissive; as, a profound bow.

(2):

(a.) Descending far below the surface; opening or reaching to a great depth; deep.

(3):

(a.) Intellectually deep; entering far into subjects; reaching to the bottom of a matter, or of a branch of learning; thorough; as, a profound investigation or treatise; a profound scholar; profound wisdom.

(4):

(a.) Characterized by intensity; deeply felt; pervading; overmastering; far-reaching; strongly impressed; as, a profound sleep.

(5):

(n.) The deep; the sea; the ocean.

(6):

(n.) An abyss.

(7):

(v. t.) To cause to sink deeply; to cause to dive or penetrate far down.

(8):

(v. i.) To dive deeply; to penetrate.