An intense, relative dark blue.

(transitive) To make a deep copy of. / (intransitive) To make a deep copy.

(computing) A copy of a data structure duplicating not only the structure itself, but all structures to which it is linked.

baked in a deep dish (a metallic pan)

Used other than figuratively or idiomatically: see deep, water. / Waters suitable for deep-draft ships, especially ocean-going. / (idiomatic) A difficult or embarrassing situation.

(astronomy) Existing outside of the Solar System; relating to that which exists outside of the Solar System.

Reaching up to the knees. / Submerged to the knees. / (figuratively, by extension) Deeply involved in something, or preoccupied with something.

Having a great depth of water. / Carried out at great depth. / Located in or near deep ocean waters. / Living at a great depth underwater

A secret informant possessing valuable information, especially one who stays secret long after the incident in question is concluded.

(literally, of a plant) Having deep roots; (of a non-living object) deeply and firmly embedded (in the ground, etc.). / (figuratively) Firmly established in thought or behaviour and difficult to change.