[Elements vary by font] In Chinese, 埀 as「repeatedly bobbing head」with「losing, losers」drawn within「prick」as HANGING DOWN, DANGLING, DROOPING, FLACCID. This Japanese variant replaces the two「loser」elements in 埀 either with two「screwing」or, with「multiple penis」elements within「night soil, feces」that also suggests losing one thing or another, such as the battle or one's life. In either case as repeatedly bobbing head prick in losers, or, repeatedly bobbing head prick screwing in both sides, the net effect will be drooping, dangling, and oozing fluids dribbling on the ground from what once was hard wood.
Base of the glyph resembles branches that extent very low and flat above「soil」: the HORNBEAM, or IRONWOOD TREE that grows as an understory, underneath the branches of a much larger tree, as seemingly one「wood」handing off to another「wood」or drooping over the smaller tree, therefore the hornbeam always appears to be the「loser in the contest」for growing space. So named because the wood is extremely hard, as is iron or horn bone…yet the flowers are pendulous catkins that DANGLE and appear to be SUSPENDED and DRIBBLING FLUIDS.
Note the connection with「horny, boners, iron woody, dribbling fluids, dangling」etc. Branches grow very close to the ground, ALMOST, NEARLY touching the dirt, APPROACHING the lowest possible height and serving as ground cover only a few inches above the soil. The fruits also are SUSPENDED, and many share a common stalk, growing in clusters and DANGLING from a long, single stem,「twisting」in the breeze, as might something heavy hanging from a low branch.
Some scholars suggest the glyph is referring to mail bags suspended and dangling, with people literally sitting within trees on branches, one person looking in each direction of a road watching for a postal rider, but it is more likely that a quicker response might be had by people located physically on the ground and loading the mail when a rider arrived. Indeed, the location of the hornbeam beneath other trees, and the low stature of the tree make sitting within its branches unlikely and impractical. Perhaps a flag signaling to stop for a pickup was what dangled from a branch somewhere.
The hornbeam tree represents either literally or figuratively, hanging the severed heads of the losing side, a defeated enemy, with all the accompanying twisting, dangling, and dripping while awaiting pickup and delivery to the winning side's liege lord. See the related glyph meaning「delivery」that adds details of male genitals being severed and placed within a cavity (mouth?), for whatever reason you might imagine.
The town nearest Sekigahara where Tokugawa in 1600 battled to become shōgun of Japan and 32,000 enemy soldiers were killed or executed is named Tarui, or「hornbeam tree community, very many emerging shafts with water well」as the place where some executions of the losers took place, and the available heads and genitals of the enemy lords and leaders were washed, prepped for exhibition, and hanged awaiting pickup and delivery (present-day tour guides understandably have never heard this history).
The extremely hard wood of hornbeam ironwood that is resistant to rot was used to construct pots and planters for holding soil, growing plants, transporting heads with genitals, and in China to construct war chariots that might better withstand crashes, driver abuse at high speed, potholes, stones and logs, arrows, swords, and lances.

External source definitions …excluding politically incorrect concepts and other meanings deemed offensive today; may include extended definitions, euphemisms, and mnemonics)
Chinese: to hang (down); droop; dangle; bend down; hand down; bequeath; nearly; almost; to approach
Japanese EDRDG: droop, suspend, hang, slouch
Unihan extended: let down; suspend, hand; down

Used within names (nanori)
たる　･　だれ