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tick - n. a small, quick sound made by a clock.
cuckoo - n. a type of bird with a call that sounds like its name
frame - n. basic structure
on the cusp - expression, at the point when something is about to change to something else
ecologist - n. a scientist who studies relationships between groups of living things and their environment
species - n. a group of related animals or plants
archive - a place in which public records or historical materials are kept
disk - n. a flat, thin round object used to store information
etch - v. to produce a pattern, design etc. often used figuratively
