pay a call

pay (someone or something) a call

To visit someone or something, especially for a short, polite amount of time. We need to pay Grandma a call sometime soon—this is her first Christmas since Grandpa died, and I'm sure she would appreciate some company. I always like to pay my clients a call when I travel to their cities on business.
See also: call, pay
Farlex Dictionary of Idioms.

pay a call

Euph. to go to the toilet; to leave to go to the toilet. (See also pay a call on someone.) Excuse me. I have to pay a call. Tom left to pay a call. He should be back soon.
See also: call, pay
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

pay a call

Also, pay a visit; pay one's respects. Make a short visit, especially as a formal courtesy or for business reasons. For example, Bill asked her to pay a call to his ex-mother-in-law, or Each salesman was told to pay a visit to every new doctor in town, or We went to the wake to pay our respects. Also see call on, def. 2.
See also: call, pay
The American Heritage® Dictionary of Idioms by Christine Ammer.

pay a call

go to the lavatory. euphemistic
See also: call, pay
Farlex Partner Idioms Dictionary

pay a call

tv. to go to the toilet; to leave to go to the toilet. (see also call of nature, nature’s call.) Excuse me. I have to pay a call.
See also: call, pay
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • check up on (someone or something)
  • check on
  • check on (someone or something)
  • check up
  • dreck
  • give (something) a lick and a promise
  • get off one’s rear
  • get off (one's) rear