Word: mainboard
Part of speech: Noun
Syllables: main
board
Definition: motherboard
Morphemes:
Affix: main
Language: en
PoS: Adjective
Meaning: Belonging to or connected with the principal mast in a vessel.
Affix: board
Language: en
PoS: Noun
Meaning: Short for blackboard, whiteboard, chessboard, surfboard, circuit board, message board (on the Internet), etc.