a pound or two
fixed phr..fixed phr.. a small or approximate amount of money or weight. You use this when you do not need to be exact.
fixed phr.. an idiomatic quantifier used to express an approximate but relatively small value, typically referring to British currency or units of mass.
The bus fare might cost a pound or two.
I only need to lose a pound or two before the wedding next month.
While the individual components cost only a pound or two each, the cumulative total of the project exceeded our initial budget.
The phrase functions as an indefinite pronoun or quantifier and usually follows the noun it modifies if referring to weight.
Teach this alongside other 'X or two' constructions like 'a day or two' or 'a word or two' to show how English expresses small, vague quantities.
It costs a pound or twice.It costs a pound or two.The phrase is a fixed idiom using the number 'two' to show a small range, not the adverb 'twice'.