[Elements and glyph shape vary by font] describes GRASPING or CLASPING something or someone tightly as the fundamental meaning. Perhaps also using teeth as might an attacking dog, likely in a STRANGLEHOLD or CHOKEHOLD about a neck with hair, and holding on a long time. An item such as a hair clasp would also fit the description as an extended meaning, although no mention is made of where that hair may be located, and this may refer to something clasped around the pubic hair to contain discharges, or HAIR ORNAMENTATION…but frankly, the glyph does contain the elements for both「erection」and「bent penis」that combine to what seems to suggest performing what in today's vernacular is referred to as「choking one's chicken」as a variant of「copulation」(儿). Male chickens, or 'cocks' are a species of bird. Both 'cock' and 'bird' continue today as euphemisms for flipping the male penis in that regard, a variant of copulation that can result in some hair ornamentation as well.
　Note that it is often difficult to speak above the tone of a WHISPER while someone else is strangling or choking the speaker. See 旡 as a variant that is substituted in some fonts, as one's head incapacitated, no more fluids, noting that「fluid」includes both the liquid and gas phases of matter, such as air (see 炁).
　The reason for the STRANGLEHOLD or CHOKEHOLD by grasping someone tightly about the neck may be related to the elements as「once, one time biting erection, penis bent」in an attempt to dislodge the mouth of the biter…or, refers to the biter as「one biting while copulating」and thereby placing the person being bitten (the 'bitee') in a STRANGLEHOLD or CHOKEHOLD on his short neck for a time, as revenge or to exact a promise, and so forth. This situation will probably only occur「once, one time」depending upon the severity of the bite and subsequent first aid rendered, and served to popularize the use of no-longer-integrated feet of a service provider by shamans rather than toothed orifices, generally.
　CLENCHING and related problems and fears are present in these glyphs:
　歯 and 齒 as teeth.
　恨 regret, hate, resentment, rueful, hold a grudge, malice, bitter feeling, rancor, to curse and swear.
　艮 chewing.
　仡 being fed up with conditions and bravely doing something about it while unafraid of the consequences.
　旡 suddenly choking on something in one's throat.
　兂 clasped with teeth.
　邪 wickedly demonic.
　拑 pinning with clenched teeth.
　音 loud noise.
　既 and 既 too late, happened already, unchangeable.
　茱 and 萸 bloody stump, dogwood.
　飢 ravenously chomping meat.
　啗 enticing lure, gnawing meat.
　啖 threaten a superior, taunt and torment, reckless endangerment while tasting and eating.
　猖 ferocious and insane, mad, reckless, not following the rules.
　惕 healthy respect of danger.
　𣇄 and 晣 biting off a chunk, bent by tonguing mouth.
　惮 and 憚 fear, dread, shirking, shrunk.
　喫 clenching with gasps.
　吃 and 喫 extirpate, destroy utterly.
　揕 bare-fisted jab, punch in the face.
　意 long in thought, intent, concerns.
　貇 tenaciously clenching jaw and not letting go.
　虞 horror, terror, terrorism.
　鉗 clamp and gag.
　𪗱 and 齟 discord, broken teeth.
　𪘚 and 齬 gritting one's teeth, great hatred.
　齭 pain caused by teeth.

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)
Unihan extended: hairpin, clasp; wear in hair
EDRDG: hairpin; clasp; wear in hair