1.
errand; doing business; running an errand
going out to take care of some task or business
Common collocations
- 用足しに行く/出かける (to go on an errand; to go to the toilet)
- 用足しをする (to run an errand; to relieve oneself)
- 用を足す (the verb phrase: to do one's business, either sense)
Usage
Both senses are a little old-fashioned. Sense 2 is an indirect way of saying one needs the toilet; context decides which sense is meant, so ちょっと用足しに can be either.