engineer sub-unit

engineer Noun

— An engineer is someone who is paid to solve technical problems, or to help invent things. — An engineer is someone who drives a train.

engineer Verb

— If you engineer something, you design or construct something. The man will engineer a new kind of car. — If you engineer something, you make or alter something by genetic engineering. — If you enginner something, you plan or achieve a goal with guile.

sub Noun

— Short for submarine. — Short for submarine sandwich. — Short for substitute. — Short for subscription. — Short for submissive.

sub Verb

— To substitute for. I subbed for an injured player during last night's game. — To work as a substitute teacher, especially in primary and secondary education. Now that I've retired from my full-time teaching job, I'll do some subbing from time to time to keep busy and earn a little extra money. Ms. Smith subs for Mr. Jones' math class when he's sick. — , To replace (a player) with a substitute. He never really made a contribution to the match, so it was no surprise when he was subbed at half time.

unit Noun

— One of a measure of something; the amount of something that is counted as "one". Measure five units to the left. $4 is the unit price. A pound is a useful unit for thinking about amounts of butter. — Form of measurement. I prefer metric units. — Item, used when no other word for something exists. He set up the A/C unit.