I. la ‧ ther 1 /ˈlɑːðə $ ˈlæðər/ BrE AmE noun [singular, uncountable]
[ Language: Old English ; Origin: leathor ]
1 . a white mass of bubbles produced by mixing soap in water
2 . a white mass that forms on a horse’s skin when it has been ↑ sweat ing SYN foam
3 . get in a lather ( also work yourself into a lather ) informal to get very anxious or upset about something:
By the time Alan called, Jody had worked herself into a lather.
4 . in a lather very worried, upset, or excited:
He was in a lather of anticipation.
II. lather 2 BrE AmE verb
1 . [intransitive] to produce a lather:
This soap lathers really well.
2 . [transitive] to cover something with lather