「Land with succeed, consist of, to become」and so on describes a lord either building or conquering a CASTLE that controls a land-based territory.「Ground complete」suggests a fortification self-sufficient or well-stocked to withstand a long siege.
　「Feces with male's vigorous blasting shaft, rod streaming with erection sliding head of stake into soil and discharging」describes the MOUND OF COMPACTED SOIL at the base of rocks, called a RAMPART, an Old French word meaning 'to take possession of' as described in the elements.「Ground」that is similar to a「dog erect, completed copulation.」An earthen, built-up, enlarged, bulging and extra-swelled area, i.e., a RAMPART, at the base of stone walls surrounding a CASTLE, later referring to the castle itself. Walls with bulging bases stood a better chance of not falling over, and were used around castles to keep unwanted people out. In many cases, a walled castle was constructed first in some strategic spot, and a city sprang up around or nearby it to provide services of all types to the royals and military personnel dwelling therein.
　Right element of「become, complete」refers to anatomical features at the base of a dog's penile shaft that force it to「complete」the full actions of copulation necessary to achieve fertilization. Male canids, or the 'dogs,' are endowed with a very special penis, unlike any other animal's, equipped with two glands located at the base of the shaft that engorge and harden upon erection, normally after penetration into the bitch's vaginal walls, similar in shape to the base of the castle walls in the ground, particularly walls of a round castle tower. These locking bulbus glandis swell large enough to prevent the penis from being extracted from the bitch's vagina for quite some time, normally ten to fifteen minutes, give or take a few minutes, to allow the dog's semen sufficient time to get enough of a head start toward the bitch's ova that the male might actually sire some pups, completing his mission in life, rather than the semen of the next dick dog waiting to mount the same bitch in heat. Other analogies with copulating canids, dogs and bitches, rampart castles where royals lived in towers, and so on are left to your imagination.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: city walls; city; town
Japanese: fortress, castle
Unihan extended: castle; city, town; municipality
EDRDG: castle

Used within names (nanori)
いく　･　がき　･　き　･　くに　･　ぐしく　･　ぐすく　･　しき　･　すく　･　ぜい　･　たち　･　なり