bench: [OE] Old English benc goes back to Germanic *bangk-, also the source of English bank (the related German bank means ‘bench’). The Northern and Scottish English versions of the word were benk and bink. The specific application to the seat on which a judge sits arose in the 13th century. => bank
Old English benc "long seat," from Proto-Germanic *bankiz "bank of earth," perhaps here "man-made earthwork," later "bench, table" (cognates: Old Frisian bank "bench," Old Norse bekkr, Danish bænk, Middle Dutch banc, Old High German banch), from PIE root *bheg- "to break." Used for "office of a judge" since late 13c. Sporting sense "reserve of players" (in baseball, North American football, etc.) is by 1909, from literal sense of place where players sit when not in action (by 1889).