CHINNING

CHIN

chin, chin up

(verb) raise oneself while hanging from one’s hands until one’s chin is level with the support bar

Source: WordNet® 3.1

Verb

chinning

present participle of chin

Source: Wiktionary

CHIN

Chin, n. Etym: [AS. cin, akin to OS. kin, G kinn, Icel. kinn, cheek, Dan. & Sw. kind, L. gena, Gr. hanu. *232.]

1. The lower extremity of the face below the mouth; the point of the under jaw.

2. (Zoöl.)

Definition: The exterior or under surface embraced between the branches of the lower jaw bone, in birds.

Source: Webster’s Unabridged Dictionary 1913 Edition