retaining /ɹɪˈteɪnɪŋ/adjective 1noun 1forms 1 adjective1 •Of or pertaining to something that retains something else, as with a retaining wall. noun1 •The act by which something or someone is retained; a retention.All retainings by indenture before that date were declared null and void 'other than to be the household servant or officer or of his [the lord's] council for lawful service done or to be done'. — 1989 formsretainings