GBU-28

 Dictionary entry overview: What does GBU-28 mean? 

• GBU-28 (noun)
  The noun GBU-28 has 1 sense:

1. a 5,000 pound laser-guided bomb that can be programmed to penetrate to a given depth before exploding; used to penetrate hardened underground facilities

  Familiarity information: GBU-28 used as a noun is very rare.

 Dictionary entry details 

• GBU-28 (noun)

Sense 1

Meaning:

A 5,000 pound laser-guided bomb that can be programmed to penetrate to a given depth before exploding; used to penetrate hardened underground facilities

Classified under:

Nouns denoting man-made objects

Synonyms:

Bunker Buster; GBU-28; Guided Bomb Unit-28

Instance hypernyms:

laser-guided bomb; LGB (a smart bomb that seeks the laser light reflected off of the target and uses it to correct its descent)