UNCLING

Etymology 1

Verb

uncling

present participle of uncle

Etymology 2

Verb

uncling (third-person singular simple present unclings, present participle unclinging, simple past and past participle unclung)

(obsolete) To cease from clinging or adhering.

Source: Wiktionary

Un*cling", v. i. Etym: [1st pref. un- + cling.]

Definition: To cease from clinging or adhering. [Obs.] Milton.

UNCLE

Un"cle, n. Etym: [OE. uncle, OF. oncle, uncle, F. oncle, fr. L. avunculus a maternal uncle, dim. of avus a grandfather; akin to Lith. avynas uncle, Goth. aw grandmother, Icel. ai great grandfather.]

1. The brother of one's father or mother; also applied to an aunt's husband; -- the correlative of aunt in sex, and of nephew and niece in relationship.

2. A pawnbroker. [Slang] Thackeray. My uncle, a pawnbroker. [Slang] - - Uncle Sam, a humorous appellation given to the United States Government. See Uncle Sam, in Dictionary of Noted Names in Fiction.

Source: Webster’s Unabridged Dictionary 1913 Edition