Green’s Dictionary of Slang

mot v.

[mot n. (2)]

to go out pursuing women, to court.

[Ire]S. O’Casey Windfalls 123: He’ll be bringing Mary Timmons to th’ pictures to-night [...] He must be motting her now, for six months. Curious, a sturdy fella like him to be gone on a bloodless one like Mary Timmins.