smock-frock noun. ['smɒkfrɒk] L18.
[from SMOCK noun + FROCK noun.]
Hist.
1. A loose outer garment resembling a shirt and reaching to the knees or below, with the upper part closely gathered in smocking, formerly worn by a field-labourer or workman. L18.

2. A wearer of such a garment. M19.

► Earlier as simply frock.

[TahlilGaran] English Dictionary ▲