heap, stack / pillar / battery / tails / pile

(colloquial) just, exactly / (colloquial) dead (of stopping etc.); on the dot, sharp (of time), smack

(colloquial) smack-dab, smack bang

heads or tails ("tails or heads")

second-person singular present indicative/subjunctive of piler

plural of pile

(transitive, cooking) to crush / (intransitive) to slam on the brakes of a vehicle, making it come to a sudden stop