shanty (n.1) Look up shanty at Dictionary.com
"rough cabin," 1820, from Canadian French chantier "lumberjack's headquarters," in French, "timberyard, dock," from Old French chantier "gantry," from Latin cantherius "rafter, frame" (see gantry). Shanty Irish is from 1928 (title of a book by Jim Tully).
shanty (n.2) Look up shanty at Dictionary.com
"sea song," 1867, alternative spelling of chanty.