← BackshareGuesschock a block/ˈtʃɑk ə ˈblɑk/adjectiveCompletely full; crowded or packed tightly.Her schedule is chock-a-block with meetings and appointments.The subway car was chock-a-block with commuters during rush hour.The little shop was chock-a-block with handmade crafts and souvenirs.SynonymscrowdedjammedpackedAntonymsempty