clutchyoudaoicibaDictYouDict[clutch 词源字典]
clutch: Clutch ‘seize’ [14] and clutch of eggs [18] are separate words, although they may ultimately be related. The verb arose in Middle English as a variant of the now obsolete clitch, which came from Old English clyccan ‘bend, clench’. The modern sense of the noun, ‘device for engaging a motor vehicle’s gears’, which was introduced at the end of the 19th century, developed from a more general early 19thcentury meaning ‘coupling for bringing working parts together’, based no doubt on the notion of ‘seizing’ and ‘grasping’. Clutch of eggs is a variant of the now obsolete dialectal form cletch [17].

This was a derivative of the Middle English verb clecken ‘give birth’, which was borrowed from Old Norse klekja (probably a distant relative of clutch ‘seize’).
[clutch etymology, clutch origin, 英语词源]
clutch (v.)youdaoicibaDictYouDict
Old English clyccan "bring together, bend (the fingers), clench," from PIE *klukja- (cognates: Swedish klyka "clamp, fork;" related to cling). Meaning "to grasp" is early 14c.; that of "to seize with the claws or clutches" is from late 14c. Sense of "hold tightly and close" is from c. 1600. Influenced in meaning by Middle English cloke "a claw." Related: Clutched; clutching.
clutch (n.3)youdaoicibaDictYouDict
"a brood, a nest" in reference to chickens, eggs, 1721, from clekken "to hatch" (c. 1400). Said by OED to be apparently a southern England dialect word. Compare batch/bake. Probably from a Scandinavian source (such as Old Norse klekja "to hatch"), perhaps of imitative origin (compare cluck (v.)).
clutch (n.1)youdaoicibaDictYouDict
"a claw, grip, grasp," c. 1300, from cloche "claw," from cloke (c. 1200), related to clucchen, clicchen (see clutch (v.)). Meaning "grasping hand" (1520s) led to that of "tight grasp" (1784). Related: Clutches.
clutch (n.2)youdaoicibaDictYouDict
movable mechanical part for transmitting motion, 1814, from clutch (v.), with the "seizing" sense extended to "device for bringing working parts together." Originally of mill-works, first used of motor vehicles 1899. Meaning "moment when heroics are required" is attested from 1920s.