"concentration or accumulation of mental energy," 1922, from Latinized form of Greek kathexis "holding, retention," from PIE root *segh- "to hold." Used by psychologists to render Freud's (Libido)besetzung.
in carpentry, "the projection inserted to make a joint," late 14c., from Anglo-French tenoun, Old French tenon "a tenon," from Old French tenir "to hold" (see tenet). As a verb from 1590s.
"a grip, grasp, tight hold," c. 1200, plural, cleches, from or related to the verb clucchen, clicchen (see clutch (v.)). Clutches "the hands," suggesting grasping rapacity or cruelty, is from 1520s.
c. 1300, "restrain (someone), control (oneself), behave (in a certain way)," from Old French contein-, tonic stem of contenir, from Latin continere (transitive) "to hold together, enclose," from assimilated form of com "with, together" (see con-) + tenere "to hold" (from PIE root *ten- "to stretch").
From mid-14c. as "to have (something) as a constituent part;" from late 14c. as "have something inside, enclose." Related: Contained; containing; containable.
mid-14c., pinnen, "to affix with a pin," from pin (n.). Figurative uses, on the notion of "seize and hold fast in the same spot or position" are from 1570s. Related: Pinned; pinning. Sense of "to hold someone or something down so he or it cannot escape" is attested from 1740. In U.S. colleges, as a reference to the bestowal of a fraternity pin on a female student as an indication of a relationship, it is attested by 1938. Phrase pin down "define" is from 1951.