From Longman Dictionary of Contemporary Englishblowpipeblow‧pipe /ˈbləʊpaɪp $ ˈbloʊ-/ noun [countable] PMWa tube through which you can blow a small stone, arrow etc, used as a weapon
Examples from the Corpus
blowpipe• The drape billowed and a tiny figure crept stealthily out, a blowpipe raised to its hideous lips.• Walking starkers through the forest, incredibly agile, never get tired, killed a monkey in a tree with a blowpipe.• Deer trail fresh, maybe catch deer along blowpipe.• Jehana was fitting a dart into the blowpipe.• Just like humans, they go hunting with their blowpipes and they erect snares and traps in the jungle. 