1. to take (the property of another or others) without permission or right, especially secretly or by force: A pickpocket stole his watch.
2. to appropriate (ideas, credit, words, etc.) without right or acknowledgment.
3. to take, get, or win insidiously, surreptitiously, subtly, or by chance: He stole my girlfriend.
4. to move, bring, convey, or put secretly or quietly; smuggle (usually followed by away, from, in, into, etc.): They stole the bicycle into the bedroom to surprise the child.
5. Baseball . (of a base runner) to gain (a base) without the help of a walk or batted ball, as by running to it during the delivery of a pitch.
1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying according to composition and heat treatment: generally categorized as having a high, medium, or low-carbon content.
2. a thing or things made of this metal.
3. a flat strip of this metal used for stiffening, especially in corsets; stay.
4. a bar of this metal that has one end formed to hold a bit for driving through rock.
5. steels, stocks or bonds of companies producing this metal.
I believe that he wasn't saying that you misspelt the word, he was saying that infringement does not equal 'stealing.'
Infringement is probably within the scope of appropriation which is the number 2 definition you listed, but maybe it shouldn't be. Conflating real theft with copyright infringement is confusing, and unnecessary.
If I've misinterpreted anything then please ignore.
