1 brick, cake, block, chunk; lump, cube:
We could do with an extra loaf of bread.
2 head, sense, brains, Colloq noggin, noodle, block, bean, Brit noddle, Slang Brit chump:
1 lounge (about or around), loiter, idle, laze, lie about or around, take it easy, vegetate, watch the grass grow, Colloq US lallygag or lollygag, Slang Brit skive, Military scrimshank, US goof off, US military gold-brick, Taboo Slang US fuck off, fuck the dog:
There are always some youngsters loafing about in the park.
2 loaf away. waste, fritter away, idle away:
He loafs away all his time watching the telly.