Definition of longshoring in US English:

longshoring

noun

North American
  • The (type of) work done at a port, especially the loading and unloading of cargoes; the occupation of a longshoreman.

Origin

1920s; earliest use found in The Daily Colonist. From longshore + -ing.

Pronunciation

longshoring

/ˈlɒŋʃɔːrɪŋ/