aldermanyoudaoicibaDictYouDict
alderman: [OE] Alderman preserves the notion that those who are old (the ‘elders’) are automatically in charge. In Anglo-Saxon England the ealdor was the chief of a family or clan, by virtue of seniority (the word is based on the adjective eald ‘old’). Alderman (Old English ealdorman) was a political title or rank adopted probably in the early 8th century for someone who exercised in society at large an authority equivalent to that of the ealdor.

In effect, this meant that an alderman acted as a sort of viceroy to the king in a particular district. In the 12th century the title became applied to the governor of a guild, and as the guilds gradually took over some functions of local government, an alderman became a senior councillor. The title was officially abolished in Britain in 1974.

=> old
claim (v.)youdaoicibaDictYouDict
c. 1300, "to call, call out; to ask or demand by virtue of right or authority," from accented stem of Old French clamer "to call, name, describe; claim; complain; declare," from Latin clamare "to cry out, shout, proclaim," from PIE *kele- (2) "to shout," imitative (compare Sanskrit usakala "cock," literally "dawn-calling;" Latin calare "to announce solemnly, call out;" Middle Irish cailech "cock;" Greek kalein "to call," kelados "noise," kledon "report, fame;" Old High German halan "to call;" Old English hlowan "to low, make a noise like a cow;" Lithuanian kalba "language"). Related: Claimed; claiming.

Meaning "to maintain as true" is from 1864; specific sense "to make a claim" (on an insurance company) is from 1897. Claim properly should not stray too far from its true meaning of "to demand recognition of a right."
commanding (adj.)youdaoicibaDictYouDict
late 15c. (in astronomy), present participle adjective from command (v.). Meaning "nobly dignified" is from 1590s. Meaning "dominant by virtue of size or position" is from 1630s. Related: Commandingly (mid-15c.).
emerge (v.)youdaoicibaDictYouDict
1560s, from Middle French émerger and directly from Latin emergere "bring forth, bring to light," intransitively "arise out or up, come forth, come up, come out, rise," from assimilated form of ex- "out" (see ex-) + mergere "to dip, sink" (see merge). The notion is of rising from a liquid by virtue of buoyancy. Related: Emerged; emerging.
expert (n.)youdaoicibaDictYouDict
early 15c., "person wise through experience," from expert (adj.). The word reappeared 1825 in the legal sense, "person who, by virtue of special acquired knowledge or experience on a subject, presumably not within the knowledge of men generally, may testify in a court of justice to matters of opinion thereon, as distinguished from ordinary witnesses, who can in general testify only to facts" [Century Dictionary].
insider (n.)youdaoicibaDictYouDict
"one in possession of special information by virtue of being within some organization," 1848, from inside + -er (1). Originally in reference to the stock markets.
levitate (v.)youdaoicibaDictYouDict
1670s, "to rise by virtue of lightness," from Latin levitas "lightness," patterned in English on gravitate. Sense of "raise (a person) into the air" is mainly from spiritualism (1870s). Related: Levitated; levitating.
unwieldy (adj.)youdaoicibaDictYouDict
late 14c., "lacking strength, powerless," from un- (1) "not" + obsolete wieldy, from Old English wielde "active, vigorous," from Proto-Germanic *walth- "have power" (see wield (v.)). Meaning "moving ungracefully" is recorded from 1520s; in reference to weapons, "difficult to handle, awkward by virtue of size or shape" it is attested from 1540s. Related: Unwieldiness.
virtue (n.)youdaoicibaDictYouDict
c. 1200, vertu, "moral life and conduct; a particular moral excellence," from Anglo-French and Old French vertu "force, strength, vigor; moral strength; qualities, abilities" (10c. in Old French), from Latin virtutem (nominative virtus) "moral strength, high character, goodness; manliness; valor, bravery, courage (in war); excellence, worth," from vir "man" (see virile).
For my part I honour with the name of virtue the habit of acting in a way troublesome to oneself and useful to others. [Stendhal "de l'Amour," 1822]
Especially (in women) "chastity, sexual purity" from 1590s. Phrase by virtue of (early 13c.) preserves alternative Middle English sense of "efficacy." Wyclif Bible has virtue where KJV uses power. The seven cardinal virtues (early 14c.) were divided into the natural (justice, prudence, temperance, fortitude) and the theological (hope, faith, charity). To make a virtue of a necessity (late 14c.) translates Latin facere de necessitate virtutem [Jerome].