to apply some oily or greasy substance to (a machine, parts of a mechanism, etc.) in order to diminish friction; oil or grease (something).

a self-propelled, vehicular engine, powered by steam, a diesel, or electricity, for pulling or, sometimes, pushing a train or individual railroad cars.

created or designed something new and/or improved

a form of something that already exists

to fix

necessary to the existence, continuance, or well-being of something or someone

to do something often

someone who designs, builds, and/or produces machinery

to oppose or be against something

a particular area or place like a city, state, or country on a map

skills/abilities

a large unit of measure in the metric system

a very common mineral

feathers on a goose or duck

to be alone or without company

walking in an unsteady manner possibly causing one to trip or fall

to step on

to wave or flap

not clearly stated; few details

the bill of a bird

to print letters or designs on something

to inspire and give confidence

to disturb or bother

to find fault with angrily

get in the way of something

not willing to wait for something

sag, sink, bend, or hang down

kindly

very interesting

without interest, not caring

happy and satisfied

to answer in word or in action

to own or have control of something

part or piece of something