Boomer

Noun

 * 1) An adult male kangaroo.
 * 2) A baby boomer.
 * 3) 🇺🇸 A transient worker who would move from boom town to boom town in search of temporary work.
 * 4) 🇺🇸 A nuclear ballistic missile submarine, SSBN.
 * 5)  The bittern.

Derived terms

 * baby boomer
 * echo boomer