'any water over 100c is boiling'
Negative.
Water boils at about 80-something deg. C on Mt. Everest.
It boils at temps over 100 deg.C under higher pressure; I don't know from memory the exact relationship between pressure & temp., but others seem to have already answered.
It boils at 100 deg. C ONLY under conditions of the International Standard Atmosphere. (1013,25 hPa, from memory).
And under the right conditions, water can be superheated; which means it stays LIQUID at temperatures over 100 deg. C! (at 1bar)
Please be careful with absolute statements like you made.