definition of
expert

[1] #1 expert n. a person with special knowledge or ability who performs skillfully. wn

[2] #2 expert s. [adept, good, practiced, proficient, skillful, skilful] having or showing knowledge and skill and aptitude; "adept in handicrafts"; "an adept juggler"; "an expert job"; "a good mechanic"; "a practiced marksman"; "a proficient engineer"; "a lesser-known but no less skillful composer"; "the effect was achieved b. wn

[3] #3 expert s. [technical] of or relating to or requiring special knowledge to be understood; "technical terminology"; "a technical report"; "technical language". wn