A definition that includes first and second generation immigrants returning to their countries of origin to visit friends and relatives still makes sense to me.
Paul M
PM
Arguin
D000328:Adult; D000368:Aged; D003140:Communicable Disease Control; D004641:Emigration and Immigration; D005190:Family; D005260:Female; D033062:Friends; D006801:Humans; D008875:Middle Aged; D011634:Public Health; D009626:Terminology as Topic; D014195:Travel