1 Become wider (6)
4 Top of the arm (8)
10 Invalidating (9)
11 A memorial mound of stones (5)
12 A valuable thing or property (5)
13 Hindering (9)
14 Souvenir (7)
16 365 days (4)
19 Genus of the dogfish (4)
21 Manly qualities (7)
24 Debased (9)
25 Markedly masculine (5)
26 Desert "trees" (5)
27 Janitor (9)
28 Forces (8)
29 Deletes (6)
Down
1 Recites (8)
2 Solitary (8)
3 Larceny (5)
5 Expressway (7)
6 Not sure (9)
7 Godlike (6)
8 Fail to fulfill a promise (6)
9 Restaurant (6)
15 Labelling with numerals (9)
17 Flapjacks (8)
18 Recesses (8)
20 A short piece of nonfiction (7)
21 Current (6)
22 Coinage (6)
23 Prophet (6)
25 Metric unit of distance (5)