This recording is not very clear. Word could be any of the following:
aayum (acheyuum) "spreads something out in the sun"
aayumk (acheyuumk) "gathers into a bunch" (probably transitive, "gathers it/them into a bunch")
aayump (acheyuump) "stretches himself out in the sun, sunbathes" ("passive" version of aayum)
Aayum in other dialects is commonly used for people gathering together, as in mat aayum "they gather, get together, have a meeting, get married"