n. 1 a supporting cylindrical projection on each side of a cannon or mortar. 2 a hollow gudgeon supporting a cylinder in a steam engine and giving passage to the steam.
[ F trognon core, tree-trunk, of unkn. orig. ]
n. 1 a supporting cylindrical projection on each side of a cannon or mortar. 2 a hollow gudgeon supporting a cylinder in a steam engine and giving passage to the steam.
[ F trognon core, tree-trunk, of unkn. orig. ]
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012