fo'c'sle /ˈfəʊk.səl/ noun1 •(informal) forecastle.We loafed moodily about the well-deck, between the fo'c'sle and the high midship bridge structure […] "When shall we get something to eat?" I asked Boldini, as he emerged from the fo'c'sle hatch. — 1924 formsfo'c'sles