i Register
In some senses, semi is marked as informal, slang, UK, US. Watch for register when choosing this word.
noun
A semi-detached house.
2008, Elliott Placks, quoted in Helen Isbister, Morris Bryant, Property, Career FAQs, Australia, page 40, I′m selling two side-by-side semis that are currently under construction, a waterfront apartment and a house in Rose Bay.
The smaller semis of the 1920s and 1930s were closely related to the three bedroom pre-1919 narrow fronted terraces, at least to the larger pre-1919 terraces.
A semi-trailer; a tractor-trailer; an eighteen-wheeler; an artic.
I was hungry an' freezin' an' done caught a chill / When the lights of a big semi topped the hill
All night we couldn′t hear each other speak because of the sound of semis changing gear to get over the hill.
A semifinal.
A partial erection of the penis.
The twink got a semi just from that look.
A semiautomatic firearm.
See these niggas through the reticle sight up on my semi […] For niggas plottin', I might blow it at your fitted Get your bitch-ass slimed out, it ain't no kiddin' Ain't no kiddin', got that semi
adv
Somewhat; to some extent.
'Is that a serious question?' he asked. Ralph shrugged with his face, jutting out his bottom lip. 'Well ... semi,' he said.