Ci talk:1002269572
ABC says "pass on a skill from a master to a single disciple" but these dictionaries say it's about transmission from a single master rather than to a single disciple.
1) 旧指只受一个师傅或一个流派所传授，不杂有别的流派。 [1]
2) 舊指僅受一個老師或一個流派傳授，不夾雜其他派別。 [2]
3) 一師傳授而不雜別派。 [3]
4) GFC: 旧指只受一个师傅传授, 不夹杂别的门派 | 我的武功是法正长老单传的。
5) Grand Ricci ~ Doctrine ou art tramsmis par un seul maître
6) The Contemporary Chinese Dictionary: pass on a skill from a single master to apprentices without influences from other schools
7) HDC ~ 一师所传, 不杂别派。