fianchetto
verb
fi·an·chet·to ˌfē-ən-ˈke-(ˌ)tō 
-ˈche-
-ˈche- fianchettoed; fianchettoing; fianchettos
transitive verb
: to develop (a bishop) in a chess game to the second square on the adjacent knight's file
intransitive verb
: to fianchetto a bishop
Word History
Etymology
fianchetto an opening in chess, from Italian, diminutive of fianco side, flank, from Old French flanc — more at flank
First Known Use
1927, in the meaning defined at transitive sense