1 a narrow lane or passage, esp. one between or behind buildings
3 (Tennis) (chiefly U.S.) the space between the singles and doubles sidelines
4 a walk in a park or garden, esp. one lined with trees or bushes
up (or down) one's alley a variant of up one's street (see street (sense 8))
(C14: from Old French alee, from aler to go, ultimately from Latin ambulare to walk)
English Collins Dictionary - English Definition & Thesaurus
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