balusteryoudaoicibaDictYouDict[baluster 词源字典]
baluster: [17] Etymologically, baluster and banister are the same word. Both come ultimately from Greek balāustion ‘pomegranate flower’, which reached English via Latin balaustium, Italian balaustro, and French balustre. The reason for the application of the term to the uprights supporting a staircase handrail is that the lower part of a pomegranate flower has a double curve, inwards at the top and then bulging outwards at the bottom, similar to the design of some early balusters.

A balustrade [17], from Italian balaustrata via French, is a row of balusters. Already by the mid 17th century a transformation of the l to an n had taken place, producing the parallel banister.
=> balustrade, banister[baluster etymology, baluster origin, 英语词源]
fiddle-head (n.)youdaoicibaDictYouDict
also fiddlehead, "one with a head as hollow as a fiddle," 1854 (fiddleheaded), from fiddle (n.) + head (n.). As a name for young fern fronds, from 1877, from resemblance to a violin's scroll. Earliest use is nautical, "carved ornamental work at the bow of a ship in the form of a scroll or volute" (1799).
There are three kinds of heads,--1st The Figure-head is one on which is placed the figure of a man, woman, or the like, &c.; 2d, The Billet-head, or Scroll-head is one finished with two scrolls or volutes ...; and 3d, the Fiddle-head, which is finished with only one scroll or volute, having the spirals turning inwards to the vessel. [Peter Hedderwick, "Treatise on Marine Architecture," Edinburgh, 1830]
innards (n.)youdaoicibaDictYouDict
1825, innerds, dialectal variant of inwards "the bowels" (c. 1300); see inward.
teresyoudaoicibaDictYouDict
"Either of two muscles passing below the shoulder joint from the scapula to the upper part of the humerus, one ( teres major) drawing the arm towards the body and rotating it inwards, the other ( teres minor) rotating it outwards", Early 18th century: modern Latin, from Latin, literally 'rounded'.
afferentyoudaoicibaDictYouDict
"Conducting or conducted inwards or towards something (for nerves, the central nervous system; for blood vessels, the organ supplied)", Mid 19th century: from Latin afferent- 'bringing towards', from the verb afferre, from ad- 'to' + ferre 'bring'.