Meaning of MECHANICS in English

MECHANICS

[me.chan.ics] n pl but sing or pl in constr (1648) 1: a branch of physical science that deals with energy and forces and their effect on bodies

2: the practical application of mechanics to the design, construction, or operation of machines or tools

3: mechanical or functional details or procedure

Merriam-Webster English vocab.      Английский словарь Merriam Webster.