A specific iteration of a model of central processing unit, often distinguished by the addition or removal of features compared to earlier examples of the same processor, or the presence, or lack thereof, of specific bugs.
The act of taking a step.
A mark left on the earth by a foot.
A faint mark or visible sign left by something which is lost, or has perished, or is no longer present.
A vestigial organ; a non-functional organ or body part that was once functional in an evolutionary ancestor.