'payload' definitions:

Definition of 'payload'

(from WordNet)
noun
The front part of a guided missile or rocket or torpedo that carries the nuclear or explosive charge or the chemical or biological agents [syn: warhead, payload, load]
noun
Goods carried by a large vehicle [syn: cargo, lading, freight, load, loading, payload, shipment, consignment]

Definition of 'payload'

From: GCIDE
  • payload \pay"load`\ (p[=a]"l[=o]d`) n. The part of a missile or torpedo that carries the explosive charge.
  • Syn: warhead, load. [WordNet 1.5]
  • 2. The goods carried by a large vehicle.
  • Syn: cargo, lading, freight, load, loading, shipment, consignment. [WordNet 1.5]

Synonyms of 'payload'

From: Moby Thesaurus