SHIRTFRONT
dickey, dickie, dicky, shirtfront
(noun) a man’s detachable insert (usually starched) to simulate the front of a shirt
shirtfront
(noun) the front of a shirt (usually the part not covered by a jacket); “he had spilled catsup on his shirtfront”
Source: WordNet® 3.1
Etymology
Noun
shirtfront (plural shirtfronts)
The front part of a shirt.
A detachable insert that simulates the front of a shirt.
(cricket) A pitch that is easy to bat on.
(Australian rules football) A head-on charge aimed at bumping an opponent to the ground.
(real estate, slang) An attractive facade applied only to the front of a house.
Verb
shirtfront (third-person singular simple present shirtfronts, present participle shirtfronting, simple past and past participle shirtfronted)
(transitive, AU, politics) To confront in a threatening manner.
Source: Wiktionary