window-shopper; customer just looking
Refers to a person who enters a shop or looks at goods without intending to buy. Often used in retail contexts.
On weekends the shop gets crowded with window-shoppers.
He's just looking, so it's pointless to approach him.
Standard kanji spelling.
Kana spelling of the first part; common in everyday writing.
Compound of 冷やかし (from 冷やかす, 'to window-shop' or 'to tease') and 客 ('customer').