i Register
In some senses, couple is marked as informal, dated, US, colloquial. Watch for register when choosing this word.
noun
Two of the same kind connected or considered together.
A couple of police officers appeared at the door.
'Tis in some sort with Friends (Pardon the Coarseness of the illustration) as it is with Dogs in Couples. They should be of the same Size; and Humour; and That which Pleases the One should Please the Other
Two partners in a romantic or sexual relationship.
The number of Souls in the Kingdom being uſually reckon'd one Million and a half, Of theſe I calculate there may be about tvvo hundred thouſand Couple vvhoſe VVives are Breeders, from vvhich Number I Subſtract thirty Thouſand Couples, vvho are able to maintain their ovvn Children, […]
A small number.
A couple of billiard balls, all mud and dirt, two battered hats, a champagne bottle […]
‘Oh, merely a couple of hundred a year, but the work is slight, and it need not interfere very much with one’s other occupations.’
One of the pairs of plates of two metals which compose a voltaic battery, called a voltaic couple or galvanic couple.
A turning effect created by forces that produce a non-zero external torque.
adj
Two or (a) small number of.
Put any couple guys in a tricked out car and a couple of bandannas […]" He trailed off.
Since we were now living so close, at least those couple hours of talking together helped boost our spirits.
det
Two or a few, a small number of.
A couple fewer people show up every week.
I'll be there in a couple minutes.