DHa bed, room etc that is meant to be used by one person only:
You have to pay extra for a single room.
British EnglishTTa single ticket etc is for a trip from one place to another but not back again [= one-way; ↪ return, round-trip]
WORD FOCUS: married WORD FOCUS: married singlenot married divorcedif you are divorced, you have officially ended your marriage to someone engagedif you are engaged to be married, you have formally agreed to marry someone in the future widowedif you are widowed, your husband or wife has died be living togetherto be living as a couple in the same house without being married spouseformalthe person you are married to partneryour husband, wife, boyfriend, or girlfriend marital statuswhether you are single or married - used on official forms ➔ See alsomarried
Definition from the Longman Dictionary of Contemporary English Advanced Learner's Dictionary.