tank up

"Thanksgiving eve," he repeated. "We was to have a leetle celebration Thanksgiving eve." And he added somewhat anxiously: "You ain't forgot about that, Bill? It's an awful long time since we had a drink." / "Last time you had too many," Skookum Bill reminded him. / "What if I had?" Dobbs asked, in injured tones. "I get durn little fun in life, and I'm gettin' old. About the only time I feel good and like I used to is when I'm tanked up. Wait twenty years and you'll know."