Wiktionary
shellbacks
n. (plural of shellback English)
Usage examples of "shellbacks".
In accordance with naval regulations, all shellbacks had the particulars of their initiation recorded in their service records--ship, date and longitude.
At the exit of the tunnel were shellbacks with saltwater hoses to rinse off the garbage, but the wogs were only beginning their odyssey.
The wogs slithered through this mess to the other side, where shellbacks helped them out, wiped them down, and congratulated them heartily.
I have 'em wet behind the ears, like young Jimmy Smith, right out of school, and old shellbacks like Gleason.