Word: backstairs
Part of speech: Noun
Syllables: back
stairs
Definition: A staircase at the rear of a building or one normally only used by servants and tradesmen.
Morphemes:
Affix: back
Language: en
PoS: Noun
Meaning: The roof of a horizontal underground passage.
Affix: stair
Language: en
PoS: Noun
Meaning: A series of steps; a staircase.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form the plurals of numerals, letters, some abbreviations and some nouns, usually because the omission of an apostrophe would make the meaning unclear or ambiguous.